GENIUS TOOLS Hand Socket Set GS 331M Size:GS 331M 3 8*8~19 31P and can be reliably and Torque Extension Bar Set and can be reliably and safely used ◦ Grip hole for falling prevention strap mounting (※ DS 215TZ only) Deep Hand Socket 8mm Deep Hand Socket 9mm Deep Hand Socket 10mm Deep Hand Socket 11mm Deep Hand Socket 12mm Deep Hand Socket 13mm Deep Hand Socket 14mm Deep Hand Socket 15mm Deep Hand Socket 16mm Deep Hand Socket 17mm Deep Hand Socket 18mm Deep Hand Socket 19mm Deep Hand Socket Accessory Universal Joint Extension Bar 25mmL Extension Bar 75mmL Extension Bar 150mmL Extension Bar 250mmL Hinge Handle Quick Release Ratchet Blow Case An oversize or sloppy fit can cause slippage and injury to both the socket and the fastener