SK Hand Tools 44327 1/4" Dr. 4mm Metric Hex S2 Steel Bit Socket

SK Hand Tool
1/4" Dr. 2mm Metric Hex Bit Socket #44324
Features
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 steel.