Step Drill Bits for Corby Bolts
Used for drilling recessed holes into scales for Corby Bolts, Gulso Bolts, screws etc.
Sizes: 1/4" x 3/16" - For 1/4" head diameter Corby Bolts
5/16" x .218" - For 5/16" head diameter Corby Bolts
**These are not for drilling through steel. You will need to drill the tang hole with another drill bit first.**
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