Sealey 7 piece wobble rigid extension bar set 1 4 sealey premier ak770 forged chrome vanadium steel shafts heat treated and chrome plated with mirror finish dual feature allows off centre driving of sockets at up to 10 from centre axis or the socket can be locked into at 0 supplied in storage tray sealey ak770 wobble rigid extension bar set 7pc 1 4 3 8 and 1 2 sq drive