McElroy socket fusion kits are perfect for installing fittings for pipe diameters from 1/2" CTS to 4" IPS (16mm to 125mm). These tools are designed specifically to meet ASTM F1056, ISO 8085-1 and ISO 4437 standards. Convenient kits provide all the components needed to efficiently complete your socket fusion job and it all fits into a specially-designed toolbox with a tray to keep everything organized and in one place.