Drill Chuck Model: B12. B12 Connecting Rod Length: 114mm / 4.48in. 1 Piece B12 Drill Chuck(1.5-10mm). 1 Piece B12 Connecting Rod. Great for DIY bench drills, bench mills, table saws, etc. Through the connecting rod, the shaft sleeve link is eliminated, and the drill clamp is installed directly, so the accuracy is higher.
eBay