- Small size: 14-30 mm
- large size: 30-60 mm
- length: 260 mm / 380 mm
- Two allen wrench to adapt to all kinds of bolts and nuts. universal key set of keys
- effective, practical, lightweight system. Ideal piumbing, carpentry, mechanical and gardening.
- the secret is, self-adjusting technology that enables them to automatically adapt to the size.