REAPER Silver & Deming, reduced ½” drill bits are made of a patented, high-molybdenum alloy that stands the test of time. The 135-degree split point allows for a successful drill start without pre-drilling or pre-punching. The precision ground flutes, nitro-carburized finished, and extra-wide web design facilitate fast chip removal, thus preventing bits from heating up, becoming brittle, and breaking like other bits. Reaper drill bits cut stainless steel, spring steel, even A grade 8 bolts like a hot knife through cold butter! And unlike conventional Silver & Deming bits with round shanks, all Reaper Silver & Deming bits have three ground flats, preventing chuck slippage.