Professional tool for commercial or occasional use Manufactured from chrome vanadium steel or strength and durability 8mm hex drive suitable for alloy standard hand held impact drivers Set includes the following Slotted / Phillips and Pozi Screwdriver bits. Impact screwdriver bits Total length of the impact driver bits 36mm SET INCLUDES THE FOLLOWING 1 x SL8 (8mm slotted screwdriver bit) x 2 1 x SL10 (10mm slotted screwdriver bit) x 2 1 x SL12 (12mm slotted screwdriver bit) 1 X PH1 (Phillips 1) 1 x PH2 (Philips 2) 1 x PH3 (Phillips 3) 1 x PH4 (Phillips 4) 1 x 4mm Allen / Hex 1 x 5mm Allen / Hex 1 x 6mm Allen / Hex 1 x 8mm Allen / Hex