Driver Accessories
These hand drivers and drill adapters will fit with standard 1/4" and 3/8" square drives. The TGD10 hand driver and TGDA10 drill adapter fit with standard #10 Tri-Groove sockets for 1/4-in Tri-Groove machine screws and sheet metal security screws. The TGD38 hand driver and TGDA38 drill adapter will fit with #20 and #30 sockets for Tri-Groove nuts.