金刚石自由钳钳口金刚石分布均匀、耐磨、不易脱落。使用时不打滑、不伤管壁，可以延长钻探工具的使用寿命，尤其适合绳索钻具的装拆。

Manufactured with advanced technique,diamond circle wrenches can aviod damage to rods and bit.They are especially fit to sctew up and off wire-line coring rods.

技术参数：

生产规格：Ф56、Ф73/Ф71、Ф73、Ф91/Ф89

Description:Ф56、Ф73/Ф71、Ф73、Ф91/Ф89