These tools have been designed to hold saddles onto pipe at the correct pressure, before and during the Electrofusion process. They work with tapping saddles, branch saddles and purge saddles. An indicator button in the middle of the handle shows when the tool is loaded to the correct pressure. With the Pillar style clamps, the pipe holding foot will rotate to allow the tools to be used in a narrow trench. Saddles with stacks of 63mm, 90mm and 125mm can be held by using a special adaptor foot. The tools come in two types, a rigid Pillar type and a more versatile strap holding type.