WRD-BNB · Bison Bit Bison Bit Bison drive accessory 5/16 in hex drive bit for the Bison system. Drive 5/16 in hex Fits Bison system Role Drive bit Where to Buy Explore next Browse bits & drivers → Bison drive choices Bison U Bit → 5/16 in stopper for the Bison spindle Bison Bit Adapter → 1/4 in input to 5/16 in output Automated Clutch Tool — 5/16 in → Adjustable slip control for Bison setups