Professional Quality sockets manufactured from chrome vanadium steel, hardened, tempered and chrome plated for corrosion protection. Chamfered end allows easy nut location and entry. Features a hole for driving accessory spring-loaded ball bearing. Sold loose. Manufactured to DIN 3124/ISO 2725 and DIN 3120/ISO 1174 Specifications. Dimensions: 2.60cm x 1.30cm x 1.30cm Weight: 0.01kg