Professional tool for commercial or occasional use 3/8" Drive wobble extension bar set 3/8" drive so will fit any 3/8" drive ratchets / power bars Manufactured from chrome vanadium steel for strength and durability Wobble drive allows certain angle of tilt to help to get into tight awkward places By pushing the sockets onto the extension bar further this will also allow the extension bars to be non-wobble and rigid instead Heat treated highly mirror polished finish with knurled rings for added grip when using in oily slippy conditions 6 pc 3/8 drive extension bar set SET INCLUDES THE FOLLOWING SIZES - 1 x 3/8" Drive Extension Bar - total length 38mm - 1 x 3/8" Drive Extension Bar - total length 75mm - 1 x 3/8" Drive Extension Bar - total length 125mm - 1 x 3/8" Drive Extension Bar - total length 200mm - 1 x 3/8" Drive Extension Bar - total length 250mm - 1 x 3/8" Drive Extension Bar - total length 300mm Comes in a plastic blow molded box for easy storage and transportation