NANSHI Hss Step Cone Drill Bit - 4-42Mm 14 Sizes Round Shank Hole Cutter Auger Drill Bits Set  (Pack of 2)

Treated by Nitrogen to increase the hardness and abrasion resistance. Automatically deburr holes as you drill. Made of high speed steel, durable and long lasting. 14 sizes, 4-42mm(4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42mm) suitable for workpieces with hardness below 25 , Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet, ect. Product specifications: 4-42 (14 steps: 4-6-9-12-15-18-21-24-27-30-33-36-39-42mm) Product packaging: OPP bag Color: Gold Product material: steel Product handle: diameter 10mm, round handle Product length: about 98mm Package Contents: 2 x 4-42mm HSS Step Cone Drill Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.