flintronic Forstner Drill Bit, 5PCS (15-35mm) Positioner Drill Bit Set, Hinge Hole Cutter, Hole Boring Bit, Carbide Woodworking Hole Saw with Depth Stoper (Depth Range:10~40mm), Hole Puncher Locator

Hinge Hole Cutters Set: 5 pieces forstner bits round shank, 5 different boring diamters:15, 20, 25, 30, 35mm. Adjustable effective depth: 10mm~40mm. Perfect for drilling clean, flat and smooth bottom holes with no chipping, to enlarge existing holes and bore any arc you need.

Boring Conceded Hinges & LocksTypically used for boring concealed hinges and door locks. Perfect for wood products perforation, wood processing and maintenance, model production, installation of spherical door, drawers and other occasions. Comes with a hinge hole template, can provide a quick mark for door cabinet hinge mounting of 35mm or 40mm diameter.

Efficient for Boring HoleThe middle spur helps center the bit, The centering spur of each chisel guarantees precise drilling and prevents walking and wobbling during operation. Arc curve head is beneficial to chip removal, perforation is more efficient.

Tungsten Carbide: Made of titanium alloy steel for lasting durability. High speed steel Forstner bits drill overlapping, angled and blind holes in all types of wood. The hinge hole, the cylinder hole, the threaded hole for the computer desk and the attachment of the home cabinet are easy to drill.

Used for Drill MachineWith round shank, Suitable for drills, drills, bench drills, vertical drills, hand drills, motor-driven floor drills and mobile magnetic tape drills, to cut all types of soft wood, plastic, plywood and other low hardness materials. (Avoid cutting metal and non wood materials, such as steel, iron, sand, etc)