The 15-pound Spider 125 socket fusion tool with universal clamping from McElroy Manufacturing is designed for polypropylene pipe installation in overhead, vertical and tight work spaces. The clamping feature eliminates the need for inserts. An assortment of heaters and heater adapters for 63 to 125 mm (2.48 to 4.92 inches) diameter pipes are available. 918/836-8611; www.mcelroy.com/fusion.