The BlueSpot 7 Piece 3/8" Drive Extra Long Ball Ended Hex Socket Bit Set is manufactured from chrome vanadium steel for increased durability. Features an extra-long 110mm shaft for accessing hard to reach areas that conventional bits cannot reach. The hex socket set also features a ball ended tip for a tighter fit and a secure grip. Manufactured from Chrome Vanadium Steel for increased durability. Extra-long 110mm shaft to access hard to reach areas. Ball ended tips for tighter fit and a secure grip. 3/8" Square Drive. Package Contents: 3 4 5 6 7 8 & 10mm.