- Accuracy: ±4% of the reading value.
 - Unique window scale with fine increments.
 - Ergonomic, non-slip handle.
 - Push/Pull end cap to secure the set torque value from accidental change.
 - This wrench is longer than normal torque wrench, more efficiently while long time using.
 - Alloy tube, chrome plated, high strength, more durable.
 -  Various kinds of heads designed for different applications:
- STM model: Reversible ratchet head for both Clockwise and Counter-clockwise operation and can be operated with 8 degrees swing in small spaces.
- STMX model: Push-through ratchet head for clockwise and counter-clockwise operation.
- STMBQL model: Tear-shaped ratchet head, both directions, easily operated reverse lever.
- STMH model: Head holder, for 9x12, 14x18, 24x32mm rectangular shank heads.
- STMR model: Round head holder Ф16, Ф22mm accommodate varied relevant round hole inserts. 


