Each of the right clamp and the left clamp has wide flat holding end, transverse slots of different widths in the holding surface, and spherical locking tail end.
左钳和右钳夹持端为宽扁嘴样，夹持面各有相对应不同宽度的横行槽，尾端锁止部为球形；
2
The locking block mechanism clamping better than now screw clamp mechanism.