This connector (purchased in duplicate) is proving to be an indispensable complement to Clamps Wolfcraft. With it, you can access new clamping capacity (up to two meters!) Low cost (cheaper than buying a larger clamp) Its implementation is very fast and easy! A tip comes to the range "wolfcraft easy" but I have not tested my clamps being in the range "Pro" We can leave it permanently on one of the clamp to be "paired". I recommend it to all owners of Wolfcraft! (See the repeated use and in time the resistance of this accessory)