Draper Expert 1/2in. & 3/8in. Square Drive Specialised Sockets - Draper Expert 21833, A 12-point 28mm socket for the removal of diesel injectors from HGVs including Scania and Volvo. The socket is forged from chrome vanadium steel, hardened, tempered, chrome-plated and polished for corrosion protection.Manufactured and tested generally in accordance with DIN3122 and ISO3315 specifications. Draper Expert 21833 28mm 1/2" Square Drive Hgv Diesel Injector Socket Bi-hex
