The jig is designed to assist the loading of heavy pipes into the chuck of a lathe. Depending on the length of the pipe and the length of the machine bed you can either use two or as many as required to support the pipe length. The pipe can be raised into position either by winding the jaws of the jig in. and/or by lifting the pipe using the concentric cams located at the front of the jig. This is version one think it needs some more thought.