Draper Security Screwdriver Bit Set (43 Piece) - SEC4325mm 1 4" bits manufactured from chrome vanadium steel, hardened and tempered with a shot blast finish. Bit holder manufactured from zinc alloy steel with a chrome plated finish. Supplied in a heavy duty plastic case with plastic inlay to hold bits securely. Display packed. 1 x Magnetic bit holder 4 x Cross slot: No. 0, No. 1, No. 2, No. 3 6 x PZ type: No. 0, No. 1, No. 2 (x 2), No. 3 (x 2) 3 x Torq: 6, 8, 10 4 x Spanner: 4, 6, 8, 10 4 x Tri wing: 1,