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#16 .177" Screw Machine Drill Bit
C1-71
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This drill is used for drilling holes for the 4.5mm rivet holes in the bent receivers as well as opening the hammer pin hole on my flats before reaming to 5mm.
These are screw machine length drill bits with 135 degree split points to keep drill walk and bending to a minimum. The junk drills from Home Depot, Harbor Freight and most hardware stores are jobber length with 118 degree points that bend and walk more.
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