£54.64

Bosch BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum

Multi, CO21

Price data last checked 118 day(s) ago - refreshing...

View at Amazon

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

This is the usual price. Wait for it to drop, or tell us your number.

£55 today · usual range £0–£0 · best ever £45

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 613 days • 613 data points (No recent data available)

Historical
Generating forecast...
£87.75 £40.47 £50.79 £61.10 £71.42 £81.73 £92.05 03 June 2024 03 November 2024 05 April 2025 05 September 2025 05 February 2026

Price Distribution

Price distribution over 613 days • 5 price ranges

Days at Price
Current Price
127 days 161 days · current 47 days 61 days 217 days 0 54 109 163 217 £45-53 £53-62 £62-71 £71-79 £79-88 Days at Price

Price Analysis

Most common range: £79-88 (217 days, 35.4%)

Price range: £45 - £88

Price levels: 5 price ranges over 613 days

Description

Bosch Cobalt metal drill bits provide 4x longer life than standard high-speed steel drill bits, plus they provide outstanding performance in stainless steel. These have been engineered for contractors and other pros who need solid, reliable bits for demanding drilling applications in stainless, cast iron, and high-density metal. These bits also are useful for general-application drilling in high-carbon steel and light-gauge metal, as well as wood and plastic. The split-point tip has been engineered for no-skate starts and clean, accurate holes. The three-flat shank design on bits 3/16 in. And larger promotes better gripping and guards against slipping. Includes bits: (2) 1/16", (2) 5/64", (1) 3/32", (1) 7/64", (2) 1/8", (1) 9/64", (1) 5/32", (1) 11/64", (2) 3/16", (1) 13/64", (1) 7/32", (1) 15/64", (2) 1/4", (1) 5/16", (1) 3/8", (1) 1/2"

Key Features

TOUGH: The Bosch CO21 Drill Bit Set is manufactured from cobalt for drilling in hard and abrasive materials such as stainless, cast iron, and high-density metal. Also useful for general drilling in light-gauge metal, wood, and plastic.

ACCURACY: Featuring a no-skate split-point tip for clean, precise holes and accurate starts.

VERSATILITY: Includes laser-etched marking to provide clearly marked bit diameter. Included bit sizes: 1/16 in., 5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in.,11/64 in., 3/16 in., 13/64 in., 7/32 in., 15/64 in., 1/4 in., 5/16 in., 3/8 in., 1/2 in.

International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

Product Specifications

Brand
Bosch
Model
CO21
Colour
Multi
Size
Assorted
Format
DIY & Tools
Pack Size
21 items
Domain
Amazon UK
Listed Since
27 April 2017

Barcode

No barcode data available

Similar Products You Might Like

BOSCH CO14 14-Piece Cobalt Metal Drill Bit Set
98% match

BOSCH CO14 14-Piece Cobalt Metal Drill Bit Set

Bosch

£40.66 09 Feb 2026
C.K T3103 HSS Split Point Drill Bit, 0 V, Grey, Set of 19 Piece
98% match

C.K T3103 HSS Split Point Drill Bit, 0 V, Grey, Set of 19 Piece

C.K

£25.16 30 Jan 2026
Dewalt DW1969 29-Piece Pilot Point and Drill Bit Set
98% match

Dewalt DW1969 29-Piece Pilot Point and Drill Bit Set

DEWALT

£81.28 05 Feb 2026
Makita DDF083Z 18V Li-Ion LXT Brushless Drill Driver - Batteries and Charger Not Included & B-66896 33 Piece Impact Black Set
98% match

Makita DDF083Z 18V Li-Ion LXT Brushless Drill Driver - Batteries and Charger Not Included & B-66896 33 Piece Impact Black Set

Makita

£105.03 31 Jan 2026
Bosch Electric Combi Drill EasyImpact 600 (600 W, in Carrying Case) & 50-Pieces X-Line Titanium Drill and Screwdriver Bit Set (for Wood, Masonry and Metal, Accessories Drills)
98% match

Bosch Electric Combi Drill EasyImpact 600 (600 W, in Carrying Case) & 50-Pieces X-Line Titanium Drill and Screwdriver Bit Set (for Wood, Masonry and Metal, Accessories Drills)

Bosch

£55.88 05 Feb 2026
Enventor Hammer Drill, 900W 0-3000RPM Electric Corded Hammer Drill, Variable Speed, 13mm Chuck, 360° Auxiliary Handle, with 36pcs Accessories for Concrete, Iron Plate, Masonry and Wood, Blue
97% match

Enventor Hammer Drill, 900W 0-3000RPM Electric Corded Hammer Drill, Variable Speed, 13mm Chuck, 360° Auxiliary Handle, with 36pcs Accessories for Concrete, Iron Plate, Masonry and Wood, Blue

Enventor

£45.99 27 Jan 2026
97% match

Milwaukee SDS-Max Drill Bit 22x920x800

Milwaukee

£111.14 17 Mar 2026
Lenox Tools 30889889 Vari-Bit Step Drill Bit Kit, 3 Piece
97% match

Lenox Tools 30889889 Vari-Bit Step Drill Bit Kit, 3 Piece

Lenox

£124.73 18 Feb 2026
BGS 70329 | Screw and Nut Extractor Set with Left Cutting Drill Set | 2 - 18 mm | 49 pcs.
97% match

BGS 70329 | Screw and Nut Extractor Set with Left Cutting Drill Set | 2 - 18 mm | 49 pcs.

BGS

£101.05 05 Feb 2026
Bosch 10x PRO Metal HSS-G Twist Drill Bit Standard Length (for Non-ferrous metals, Steel, Ø 7,80 mm, Professional Accessory Rotary Drill/Drivers)
97% match

Bosch 10x PRO Metal HSS-G Twist Drill Bit Standard Length (for Non-ferrous metals, Steel, Ø 7,80 mm, Professional Accessory Rotary Drill/Drivers)

Bosch

£32.25 07 Feb 2026
Bosch 5x PRO Metal HSS-G Twist Drill Bit Long Length (for Non-ferrous metals, Steel, Ø 12,00 mm, Professional Accessory Rotary Drill/Drivers)
97% match

Bosch 5x PRO Metal HSS-G Twist Drill Bit Long Length (for Non-ferrous metals, Steel, Ø 12,00 mm, Professional Accessory Rotary Drill/Drivers)

Bosch

£51.86 06 Feb 2026
Terrax by Ruko A101126RO 3-piece Step Drill Set, HSS Straight grooved, in Sizes 0/9, 1, 2 in Sturdy, Practical Plastic case, 1 piece, A101126RO
97% match

Terrax by Ruko A101126RO 3-piece Step Drill Set, HSS Straight grooved, in Sizes 0/9, 1, 2 in Sturdy, Practical Plastic case, 1 piece, A101126RO

RUKO

£57.97 07 Mar 2026
97% match

Milwaukee SDS-Max Drill Bit 28x1320x1200

Milwaukee

Out of Stock 04 Feb 2026
Bosch Advanced Hand Tool Set 64-Piece (Versatile DIY Kit; High-Quality Materials; Ergonomic Tools; Pliers, Wrenches, Screwdrivers, Ratchet, Measuring Tools, Saw, Hammer and More)
97% match

Bosch Advanced Hand Tool Set 64-Piece (Versatile DIY Kit; High-Quality Materials; Ergonomic Tools; Pliers, Wrenches, Screwdrivers, Ratchet, Measuring Tools, Saw, Hammer and More)

Bosch

£115.99 01 Feb 2026
Milwaukee SDS-Max Drill Bit 25x920x800
97% match

Milwaukee SDS-Max Drill Bit 25x920x800

Milwaukee

£119.14 06 Feb 2026
PULITUO 12V Cordless Drill 35Nm - 50pcs Bit Set, 1.5Ah Battery, LED
97% match

PULITUO 12V Cordless Drill 35Nm - 50pcs Bit Set, 1.5Ah Battery, LED

PULITUO

£19.99 04 Feb 2026
HSS-TiN High Speed Coated Step Drill Bit for Drilling Metals and Hard Materials, Ideal for Precision Work.
97% match

HSS-TiN High Speed Coated Step Drill Bit for Drilling Metals and Hard Materials, Ideal for Precision Work.

Blendend

Out of Stock 31 Jan 2026
TIVOLY - Drill + Bit Set - for Drilling and Screwing - 60 Piece Case : 8 Metal Drills, 7 Wood Drills, 4 Wood Bits, 4 Concrete Bits, 1 Bit Holder + 30 Bits
97% match

TIVOLY - Drill + Bit Set - for Drilling and Screwing - 60 Piece Case : 8 Metal Drills, 7 Wood Drills, 4 Wood Bits, 4 Concrete Bits, 1 Bit Holder + 30 Bits

Tivoly

£31.48 07 Feb 2026
Bosch Professional 76 Pieces Premium X-Line Drill Bit and Screwdriver Bit Set (for wood, metal and stone, Accessories drill)
97% match

Bosch Professional 76 Pieces Premium X-Line Drill Bit and Screwdriver Bit Set (for wood, metal and stone, Accessories drill)

Bosch

£48.49 06 Feb 2026
Facom 229 A. ST1 – Step Drill Bit 4 – 6-8 – 10 – 12 – 14 – 16 – 18 – 20 mm
97% match

Facom 229 A. ST1 – Step Drill Bit 4 – 6-8 – 10 – 12 – 14 – 16 – 18 – 20 mm

Facom

£85.95 15 Feb 2026
Bosch 2608587019 HSS-TiN Metal Drill Bit Cassettes
97% match

Bosch 2608587019 HSS-TiN Metal Drill Bit Cassettes

Bosch

£90.17 06 Feb 2026
Original Einhell XL-CASE 95-Piece Impact-Resistant bit and Drill Set (bits, Various Drill bits, bit Holder, Socket Spanner, Countersink, Drill Stop, pin Spanner incl. Storage Box)
97% match

Original Einhell XL-CASE 95-Piece Impact-Resistant bit and Drill Set (bits, Various Drill bits, bit Holder, Socket Spanner, Countersink, Drill Stop, pin Spanner incl. Storage Box)

Einhell

£50.95 07 Feb 2026
Bosch 5x PRO Stainless Steel HSS-Co Twist Drill Bit (for Steel, Stainless steel, Ø 13,00 mm, Professional Accessory Rotary Drill/Drivers)
97% match

Bosch 5x PRO Stainless Steel HSS-Co Twist Drill Bit (for Steel, Stainless steel, Ø 13,00 mm, Professional Accessory Rotary Drill/Drivers)

Bosch

£40.10 18 Mar 2026
Bosch Electric Combi Drill EasyImpact 600 (600 W, in Carrying Case) & 70-Pieces X-Line Titanium Drill and Screwdriver Bit Set (for Wood, Masonry and Metal, Accessories Drills)
97% match

Bosch Electric Combi Drill EasyImpact 600 (600 W, in Carrying Case) & 70-Pieces X-Line Titanium Drill and Screwdriver Bit Set (for Wood, Masonry and Metal, Accessories Drills)

Bosch

£60.88 30 Jan 2026