Irwin Unibit USA Made #3 1/4-Inch to 3/4-Inch HSS Step-Drill Bit, 3/8-Inch Shank (10233) HSS Lathe Tool Bit Cutter A drawbar that passes through

A drawbar that passes through the headstock and threads into the backside of the collet is used to draw the collet up into the tapered adapter

Both the upper and lower sections are produced from high-quality malleable iron and reinforced by shafts

3" Extension 3/4" Shank MOD-920-4

0 0-5/32" capacity Precision Miniature Drill Chuck 0JT Mount

Irwin Unibit USA Made #3 1/4-Inch to 3/4-Inch HSS Step-Drill Bit, 3/8-Inch Shank (10233) HSS Lathe Tool Bit Cutter A drawbar that passes throughNew 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",