The 3/8 in. Hex Bit Socket Set is a of import general-purpose repair and service set for cars and trucks, lawn and garden equipment, and appliances. With seven ordinary hex sizes from 3 to 10 mm and two screwdriver bits on one storage rail, its serried size toolbox drawer space and is unproblematic to carry along to the job. hard carbon steel sockets have drive ends that hair onto your 3/8 in. drive, preventing them from sticking in fastener or falling disconnected. The precisely-sized, chamfered ends of the high-strength chromium vanadium steel bits smoothly into fastener heads, reducing wear and ensuring a redeeming fit.Set Includes : -LRB- 7 -RRB- Hex Bit Sockets -LRB- Metric -RRB- : 3, 4, 5, 5.5, 6, 8, 10 mm -LRB- 2 -RRB- Screwdriver Bit Sockets : 1/4 in., # 2 Phillips -LRB- 1 -RRB- 9-Clip Socket Storage Rail .