Step Drill Bit Set, 5 Pcs Titanium Coated High Speed Steel Step Drill Bits, DIY
5 x Step Drill Bits. Material: High Speed Steel Body, Titanium Coating. Center Punch Specification Drill Bit Specification 10-Step 3/8" Drill Bit from 1/4" to 1-3/8". 11-Step 3/8" Drill Bit from 3/16" to 7/8".