Irwin Unibit USA Made #3 1/4-Inch to 3/4-Inch HSS Step-Drill Bit, 3/8-Inch Shank (10233) Stud Extractor and fine adjustments may be

and fine adjustments may be made by a slight rotating movement of the head

They acquired other companies throughout the years

Maximum Pull:

Clamp with 1-5/16" range and 1/4-28 threaded hole for indicator

All Rules Fully Hardened and Tempered

Irwin Unibit USA Made #3 1/4-Inch to 3/4-Inch HSS Step-Drill Bit, 3/8-Inch Shank (10233) Stud Extractor and fine adjustments may beNew Old Stock Irwin Unibit USA Made #3 1 4 Inch to 3 4 Inch Step Drill Bit, 3 8 Inch Shank About this item Single flute cutting edge for greater control through steps 3 flatted shank prevents slipping in drill chuck Ideal for drilling holes into thin materials like stainless steel, copper, brass, aluminum, plastic Self Starting 1 8" Maximum Material Thickness New old stock with manufacturing dates between 2003 and 2018. 9 Hole sizes 1 4", 5 16", 3 8",