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This set has been manufactured from durable chrome vanadium for ensured robustness and colour coded for easy identification. This set includes: 4 x Slotted Bits (3, 4, 5 & 6mm) 4 x Philips® Bits (PH1, 2x PH2 & PH3) 4 x PoziDrive® Bits (PZ1, 2x PZ2 & PZ3) 4 x Hex Bits (3, 4, 5 & 6mm) 7x Torx® Bits (T10, T15, T20, T25, T27, T30 & T40) 7x Security Torx® Bits (TPX10, TPX15, TPX20, TPX25, TPX27, TPX30 & TPX40)