This item is for a set of two, metal open-end spanner wrenches used for the pre-tightening  and loosening of MC4® and MC4®-Evo 2 connections. Includes canvas storage bag with Velcro closure.

Unlocking is achieved with pins found at back of wrench.

Pre-tightening is achieved when the connector is fed into the center of one open-end spanner (based on connection type) and the open end of the second wrench is used for countering to create a twisting motion.

NOTE: Per Stäubli installation guidelines open-ended spanner wrenches are for pre-tightening only, a proper torque tool should be used for establishing torque.