1 Step Drill 4-32mm Titanium Coated Pagoda Shape Step Drill Bit Triangle Shank Hole Drill Cone Drill Bit Features: This is the New Steel Large Step Cone Drill Titanium Bit Set Hole Cutter, which is made from high quality steel, and with the Titanium coated to reduce friction and heat It is very suitable for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc Specification: Material:High speed steel (HSS) Shank: 10mm Flute: Straight Size:4-12(4,6,8,10,12)mm 4-12(4,5,6,7,8,9,10,11,12)mm 4-20(4,6,8,10,12,14,16,18,20)mm 4-32(4,6,8,10,12,14,16,18,20 ,22,24,26,28,30,32)mm Package Includes: 1x 4-32mm Spiral Groove Cone Drill Bit Note: 1.Size for manual measurement, there maybehave 0.1 to 2mm error,belongs to the normalphenomenon. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 1