Back-up wrenches
Prevent the nut or bolt on the other side from turning: safely, fully mechanical.
A back-up wrench holds the nut or bolt head on the back of the joint while you tighten or loosen on the front. So nobody needs to hold it with a spanner.
Both wrenches are fully mechanical, release without tension and are available in metric and inch sizes, also in heavy-duty versions.
The wrenches
TBW with handle, or the LTR with one moving part.
Hydraulic torque wrenches
Tightening and loosening with high, accurate torque: TorcUP TU, SQ, TX and TXU.
