5pc professional extra deep hex socket set in range of sizes from 8mm to 14mm for use with 3/8" drive ratchet or extension bar. Overall length of 120mm. Specially designed six-sided hex socket head to provide increased torque ideal for loosening stuck nuts and bolts without the risk of rounding them. Feature unique design with slightly convex internal faces and drilled out corners to ensure a secure grip even on damaged fasteners. Suitable to access fixings in hard-to-reach areas, such as parking brake cable adjusters on BMW, Ford, VAG, Vauxhall/ Opel vehicles and bumpers, rear lamps, door hinges. Made of hardened and tempered Chrome Vanadium (Cr-V) steel with chrome plated finish for corrosion resistance. Supplied in handy storage case.