£147.09

FIRST4MAGNETS N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications - 20mm O.D. x 10mm I.D. x 5mm thick - Pack of 20

SP20105RR-20

Price data last checked 181 day(s) ago - refreshing...

View at Amazon

We'll watch every seller, every day. One email when your price arrives.

Same price for 11 weeks. Today is much like next week.

£147 for 79 days straight · last change was Sep 2025

NEW HERE?

Amazon shows you one price. We show you all of them.

Tosheroon watches Amazon prices so you don't have to. Every product on Amazon has a price history — we make it visible. Set the price you'd actually pay, and we'll email you the second it gets there. No app, no account, one email.

WHAT'S ON THIS PAGE

↓ Price chart
when this has been cheap or pricey
↓ Forecast
where the price is heading next
↓ Statistics
all-time high & low, recent range
↑ Price alert
name your number, we'll email you

Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 550 days • 550 data points (No recent data available)

Historical
Generating forecast...
£157.99 £0.52 £34.88 £69.24 £103.59 £137.95 £172.31 07 June 2024 22 October 2024 08 March 2025 23 July 2025 08 December 2025

Price Distribution

Price distribution over 550 days • 3 price ranges

Days at Price
Current Price
98 days 26 days 426 days · current 0 107 213 320 426 £15-43 £43-72 £129-158 Days at Price

Price Analysis

Most common range: £129-158 (426 days, 77.5%)

Price range: £15 - £158

Price levels: 3 price ranges over 550 days

Description

Pack of 20 20mm outer diameter x 10mm inner diameter x 5mm thick Diametrically magnetised with a 2mm hole through the diameter Excellent resistance to demagnetisation Coated with three layers of nickel, copper and nickel to reduce corrosion and provide a smooth finish These versatile high-performance ring magnets are diametrically magnetised which means their north and south poles are on opposite curved faces. They also have a small 2mm hole going through the diameter of the magnet. They are used in many everyday appliances such as vacuum cleaners plus motors, generators, rotor shafts and more.

Key Features

PERFECT FOR ENGINEERING & MANUFACTURING. They also have many uses in engineering and manufacturing where small size and maximum strength are required.

CORROSION-RESISTANT PREMIUM COATING. Coated with three layers of nickel, copper, and nickel to reduce corrosion and provide a smooth and clean finish.

RESISTANT TO DEMAGNETISATION. Excellent resistance to demagnetisation.

STRONG MAGNETIC HOLD. Each magnet can support a steel weight of up to 3.2kg vertically from the magnetic face when in flush contact with a mild steel surface.

SPECIFICATIONS. 20mm outer diameter x 10mm inner diameter x 5mm thick. Diametrically magnetised with polarities runnung 90 degrees opposite 2mm holes.

Product Specifications

Size
Pack Of 20
Pack Size
20 items
Domain
Amazon UK
Listed Since
28 November 2017

Barcode

No barcode data available

Similar Products You Might Like

N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications - 20mm O.D. x 10mm I.D. x 5mm thick - Pack of 10
99% match

N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications - 20mm O.D. x 10mm I.D. x 5mm thick - Pack of 10

FIRST4MAGNETS

£79.73 30 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office, and Home - 15mm O.D. x 2mm I.D. x 2mm thick - 1.7kg Pull - Pack of 40
98% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office, and Home - 15mm O.D. x 2mm I.D. x 2mm thick - 1.7kg Pull - Pack of 40

FIRST4MAGNETS

£42.03 27 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm O.D. x 16mm I.D. x 5mm thick - 9.4kg Pull - Pack of 20
97% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm O.D. x 16mm I.D. x 5mm thick - 9.4kg Pull - Pack of 20

FIRST4MAGNETS

£96.00 27 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm O.D. x 16mm I.D. x 5mm thick - 9.4kg Pull - Pack of 10
97% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm O.D. x 16mm I.D. x 5mm thick - 9.4kg Pull - Pack of 10

FIRST4MAGNETS

£62.99 22 Jan 2026
N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications - 8mm dia x 7.25mm thick - 2.4kg Pull - Pack of 100
96% match

N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications - 8mm dia x 7.25mm thick - 2.4kg Pull - Pack of 100

FIRST4MAGNETS

£91.31 05 Feb 2026
N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications - 8mm dia x 7.25mm thick - 2.4kg Pull - Pack of 200
96% match

N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications - 8mm dia x 7.25mm thick - 2.4kg Pull - Pack of 200

FIRST4MAGNETS

£153.27 05 Feb 2026
N42SH Neodymium Magnet for High-Temperature, Engineering, and Manufacturing Applications - 4mm dia x 4mm thick - 0.58kg Pull - Pack of 250
96% match

N42SH Neodymium Magnet for High-Temperature, Engineering, and Manufacturing Applications - 4mm dia x 4mm thick - 0.58kg Pull - Pack of 250

FIRST4MAGNETS

£95.79 25 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies and Packaging - 25mm dia x 2mm thick - 3.5kg Pull - Pack of 40
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies and Packaging - 25mm dia x 2mm thick - 3.5kg Pull - Pack of 40

FIRST4MAGNETS

£96.41 13 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office, and Home - 20mm dia x 2mm thick - 2.6kg Pull - Pack of 200
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office, and Home - 20mm dia x 2mm thick - 2.6kg Pull - Pack of 200

FIRST4MAGNETS

£234.84 17 Dec 2025
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 4mm dia x 0.5mm thick - 0.09kg Pull - Pack of 500
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 4mm dia x 0.5mm thick - 0.09kg Pull - Pack of 500

FIRST4MAGNETS

£61.80 28 Jan 2026
Unmagnetised Neodymium Ring for Science, Experiments, Education and Teachers - 25mm O.D. x 16mm I.D. x 5mm thick - Pack of 10
96% match

Unmagnetised Neodymium Ring for Science, Experiments, Education and Teachers - 25mm O.D. x 16mm I.D. x 5mm thick - Pack of 10

FIRST4MAGNETS

£62.99 06 Jan 2026
Samarium Cobalt Ring Magnet for Motors, Electric Motors, Turbo Machinery and Sensors - 40mm O.D. x 25mm I.D. x 5mm thick - 11.4kg Pull - Pack of 10
96% match

Samarium Cobalt Ring Magnet for Motors, Electric Motors, Turbo Machinery and Sensors - 40mm O.D. x 25mm I.D. x 5mm thick - 11.4kg Pull - Pack of 10

FIRST4MAGNETS

£135.34 06 Feb 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 12mm dia x 1mm thick - 0.73kg Pull - Pack of 200
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 12mm dia x 1mm thick - 0.73kg Pull - Pack of 200

FIRST4MAGNETS

£59.33 30 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 8mm dia x 1mm thick - 0.44kg Pull - Pack of 250
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 8mm dia x 1mm thick - 0.44kg Pull - Pack of 250

FIRST4MAGNETS

£54.08 15 Feb 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 15mm dia x 2mm thick - 2.2kg Pull - Pack of 200
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 15mm dia x 2mm thick - 2.2kg Pull - Pack of 200

FIRST4MAGNETS

£128.99 20 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 12mm dia x 1mm thick - 0.73kg Pull - Pack of 400
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 12mm dia x 1mm thick - 0.73kg Pull - Pack of 400

FIRST4MAGNETS

£98.88 07 Feb 2026
N35 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office, and Home - 10mm dia x 5mm thick - 2.5kg Pull - Pack of 200
96% match

N35 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office, and Home - 10mm dia x 5mm thick - 2.5kg Pull - Pack of 200

FIRST4MAGNETS

£98.88 30 Jan 2026
N35 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 6mm dia x 1mm thick - 0.33kg Pull - Pack of 500
96% match

N35 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 6mm dia x 1mm thick - 0.33kg Pull - Pack of 500

FIRST4MAGNETS

£46.97 28 Jan 2026
Rubber Coated N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 16.7mm dia x 4.7mm thick - 1.8kg Pull - Pack of 100
96% match

Rubber Coated N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 16.7mm dia x 4.7mm thick - 1.8kg Pull - Pack of 100

FIRST4MAGNETS

£119.55 08 Dec 2025
Magnet Expert® 50 x 50 x 25mm Ultra High Performance N52 Neodymium Magnet - 116kg Pull ( Pack of 1 )
96% match

Magnet Expert® 50 x 50 x 25mm Ultra High Performance N52 Neodymium Magnet - 116kg Pull ( Pack of 1 )

FIRST4MAGNETS

£63.00 06 Feb 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 14mm dia x 4mm thick - 3.4kg Pull - Pack of 200
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 14mm dia x 4mm thick - 3.4kg Pull - Pack of 200

FIRST4MAGNETS

£276.87 07 Feb 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm dia x 3mm thick - 5.5kg Pull - Pack of 20
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm dia x 3mm thick - 5.5kg Pull - Pack of 20

FIRST4MAGNETS

£71.44 24 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm dia x 3mm thick - 5.5kg Pull - Pack of 40
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 25mm dia x 3mm thick - 5.5kg Pull - Pack of 40

FIRST4MAGNETS

£129.53 12 Jan 2026
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 8mm dia x 2mm thick - 1kg Pull - Pack of 500
96% match

N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 8mm dia x 2mm thick - 1kg Pull - Pack of 500

FIRST4MAGNETS

£108.15 06 Feb 2026