Reversible spear
Detailed Description
The retreating spear can be used for fishing, reversing and releasing fish. In the reverse operation, it has two functions of catching and transferring left-handed torque at the same time. It can replace left-hand thread male and female cones. Its function is similar to that of the inverted joint. The difference is that the tool does not have to be buckled with the fish, and can salvage the inner diameter of the fish.
Technical parameters
