4pcs 3/16-1/2 1/4-3/4 1/8-1/2 Titanium Coated Step Drill Bit with Automatic Center Pin Punch

Specification:
Cutting material: iron sheet, aluminum, insulation board, PVC plate wood.
Type:drill
Material:high speed steel
Size:

3/16-1/2	5 steps	3/16, 1/4, 5/16, 3/8, 7/16, 1/2
1/4-3/4	9 steps	1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/15, 3/4
1/8-1/2	13steps	1/8, 5/32, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2

Features:
Long Life True high speed steel. Good material, good quality. Corrosion resistance. High hardness and wear resistance. Specific step design, one drill for many sizes, very convenient. Durable.
Package Included:
1x centre chisel
3x drill