Professional extension bars for commercial or occasional use 1” drive extension bar 4” (100mm) extension bar 4” total length so ideal for access in restricted / hard to reach areas where space is limited Impacted extension bar Impacted so ideal for use on HGV vehicles or use with high torque tools Manufactured from C . R – v steel and impacted for maximum strength and durability 1” drive so will fit any 1” drive ratchets, bars, impact guns etc... Comes with a sprung ball socket retainer to prevent the socket from falling off the extensions when in use SPECIFICATIONS • 1” Drive extension Bar • Impacted extension bar • HRC 41 – 43 standards • Drive Size – 1” drive • Total length 4” (100mm)