These tools have been designed to restrain and align pipes before and during the Electrofusion process. They work with pipes between 16mm and 63mm in diameter and are designed to work specifically on service connection pipe. Different sizes can be selected on each arm to allow reducers to be clamped. The backbone of the ‘Universal’ and ‘Variable’ clamp can rotate to allow 45 degree and 90 degree elbows to be clamped. The ‘Variable’ tool has arms that slide on the backbone to allow different width fittings to be held. This is especially useful when clamping elbows directly onto a tapping saddle outlet.