3pcs HSS Steel Cone Drill Bit Set 4 12 20 32mm for Different Materials

Item Details:

*3pcs Set 4-12/20/32mm Large HSS Steel Step Cone Drill Bit Hole Cutter *Fits for cutting holes in a variety of materials such as steel, brass, wood, plastic etc. *Unique step structure, can open a variety of hole sizes *Used for deburring, chamfering, open hole expansion *No need to use center punch, not easy to break *Can work with pistol drill, bench drill etc. * brand new and high quality *Material: HSS steel * treatment: plating *Color: As Pictures Show *Size: 4-32mm: 4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm 4-20mm: 4,6,8,10,12,14,16,18, 20mm 4-12mm: 4,6,8,10,12mm *Handle size: 4-32mm: 10mm (Approx.) 4-20mm: 8mm (Approx.) 4-12mm: 6mm (Approx.)

Warm for Tips:

Use water to cool it while working, which can effectively extend the service life of the drill bit. The recommended drilling speed is 250-400rpm.

Package Contents:

3pcs Set Step Drill Bits

Notes:The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.