The BlueSpot 7 Piece 3/8" Drive Extra Long Torx Socket Bit Set is manufactured from chrome vanadium steel for increased durability. Features an extra long 110mm shaft for hard to reach areas that conventional bits cannot reach. Manufactured from Chrome Vanadium Steel for increased durability. Extra-long 110mm shaft to access hard to reach areas. 3/8" Square Drive. Package Contents: 3 4 5 6 7 8 & 10mm.