Kobalt Standard (SAE) 1/2-in Drive Spline 7/8-in Shallow SocketThis spline socket fits both 7 8 in and 22mm fasteners 1 2 in drive Spline sockets work on 7 different fastener types: SAE, metric, 8 point, 12 point, square, star and most rounded Made from chrome vanadium steel for strength and durability Hassle free lifetime guarantee Features Sub Brand N A Finish Polished chrome Measure Type Standard (SAE) Drive Size 1 2 in Socket Size 7 8 in Socket Depth Shallow Points Spline Intermediate Socket(s) Included No