Reversing sub

The reversing subs is also called reversing spear which is a special tool for reversing stuck drill stem above stuck point in drilling and work over operalion.

In treatment of stuck drill stem，it can work as a fishing pin tap in reversing operation，When fish is stuck or can not be reversed in fishing or reversing operation，the fish can be reversed from reversing sub and the fishing drill tool is tripped out.

Specifications – Reversing sub