The BlueSpot 8 Piece (6-13mm) Magnetic Nut Driver Set is manufactured from hardened chrome vanadium. Magnetic connector bits for a secure hold. ---Manufactured from chrome vanadium for increased durability ---Magnetic connector bits for a secure hold Package Contents 6, 7, 8, 9, 10, 11, 12 & 13mm Package Height 2.50 cm Package Length 21.50 cm Package Width 9.50 cm Weight 0.3400 kg Barcode 5028734141078.