Universal joint is a coupler interposed between double hex sockets and driving tool. Universal joint is useful for tightening nuts located at difficult/angular positions. Industrial universal joints are available from ¼" to 1" square drives.

The tool has been developed for speedier tightening of threaded studs with the help of impact wrench. It is ideal for use in assembly and maintenance of engines. The range covers stud diameters M6 to M36 (Metric), ¼" to 1 ½" UNF (SAE/British) in 3/8" (10mm) to 1" (25mm) square drives. The tool has cross-hole and groove for locking pin and ring.

Extension bar is a coupler that helps the operator to reach nut/bolts located at inaccessible places or where a driving tool cannot have access to sockets and /or where clearance for operation of driving tool is not available.
One end of the extension bar is male which fits into the square drive of the sockets and the other end is a female square drive where the driving tool fits in. The male and female square drive of this tool are of same sizse and are available for manual as well as impact application with drive sizes ranging from ¼" to 2 ½" square & length from 50mm to 500mm.

Square Drive Adaptors are used as a convertor to permit use of sockets and driving tools to different drive sizes. These are available in various combinations, ¼" Fx3/8"M, 3/8"Fx1/2"M, ½"Fx3/4"M, 1"Fx3/4"M, 1"Fx1 ½"M and vice versa. These are available for manual as well as impact use. For impact use, provision for locking ring and pin is there.