1. Material: chrome vanadium steel
2. Drive square head size: 300N.m is 1/2 interface (12.5mm), 500N.m is 3/4 interface (19mm)
3. The handle adopts non-slip knurling design, comfortable grip, not easy to slip and easy to use
4. chrome vanadium steel, mirror polished, high hardness, long service life
5. Precise counting dial design, accurate reading, easy and fast operation
6. Application areas: electrician maintenance, home emergency maintenance, pipeline maintenance, mechanical maintenance, automobile maintenance, etc.