The Foam board Stapler is designed to staple 3/8 in or 1/2 in Onix, 3/8 in to 5/8 in PEX and 3/8 in to 5/8 in RadiantPEXAL to a wide variety of foam insulation boards. The stapler has been redesigned to reduce misfires and limit jams. The stapler comes fully assembled and uses both sizes of plastic staples. Use the shorter staples for 1 in insulation boards and the longer staples for 2 in (or thicker) insulation boards. The Foam board Stapler holds up to 120 staples. Reduce pipe installation time and increase productivity.