9pc Spline Hex Key Socket Set Impact ★ 1/2" Drive ★ Spline ★ M4 - M16 ★ Deep ★ 75mm ★ CAN BE USED WITH AIR IMPACT GUNS WRENCHES AND RATCHETS SIZES
M4 - M5 - M6 - M8 -M9 - M10 - M12 - M14 - M16
Spline The spline screw drive has twelve splines in the fastener and tool.
Spline drives are sized via numbers. Its primary advantage is its ability to resist camming out,
therefore it is used in high-torque applications, such as tamper-proof lug nuts , cylinder head bolts, and other engine bolts.