Square Drive Set (SDS) – power head, square drive wrench head, reaction arm with innovative design that completely encloses all moving parts and minimizes pinch points


  • 30–35° of operating stroke provides added productivity while avoiding “tool lock on” which is common with some torque wrench designs


  • Interchangeable head design
  • Power head / square drive combination for flexible use with standard impact quality sockets
  • Power head / hex head combination for limited height in line solutions • Wide range of hex sizes available for all applications • 360° movement of reaction arm with simple dial lock for rapid change
  • For use topside and subsea
  • Compact
  • Designed to give optimum strength to weight and torque to weight ratios
  • Minimum nose radius for trouble-free tool fit


  • Simple robust design with a minimum of moving parts
  • Proven to perform even in the harshest environments


  • Just three moving parts for reduced maintenance and covered by a three year warranty

View the catalogue.

Square Drive Wrench Accessories

  • Sockets – full range of hex, bi-hex, castellated and special made to order
  • Direct-drive hexagon bits for socket head screws
  • Direct-drive sockets, peg drive sockets, allen head driver