SK Tools - Socket Bit Chrome 1/2dr 17mm Hex - 41417SK Bit Sockets Skt Bit Chrm 1 2dr 17mm Hex 17 mm 1 2" Drive Hex Chrome Bit Socket Through hole design makes it easier to replace worn or broken bits: simply pop the old bit out and insert a new replacement bit. New Bit Holder Design is 9 times stronger and helps prevent the bit from slipping out of the socket while working. Socket cold forged with high alloy US steel for maximum strength. Bits are manufactured to rigid standards using high strength S2