Specification: | 1. The power is stable and output, and the secant is more than enough to slash;
2. One-piece pen structure, changing the needle, adjusting the length of the needle, simple and convenient;
3.DC interface - alloy protective layer, tightly connected, more resistant to wear;
4. New hand-slip anti-slip design, comfortable pen grip, good hand feeling, not tired for long time use; 5 All cartridges can be used |