Metabo HPT (was Hitachi Power Tools) 3.5 in 21 Degree Pneumatic Framing Nailer Exercise Mat Ribbed top for strong adaptation Item Weight:3.507 Ribbed top for strong adaptation to edging Pair with matte black brackets for contrast or layer with warm woods to balance the industrial note window build up 5 lbs and well balanced allowing for ease of maneuverability and less user fatigue SELECTIVE ACTUATION: Allows for quick changes between sequential and contact nailing with the flip of a switch TOOL LESS DEPTH ADJUSTMENT: Depth adjustment to countersink or flush drive into a variety of materials FASTENERS: Accepts 2 in up to 3 1 2 in plastic collated framing nails NEW HEAD GUARD DESIGN: Allows for quicker disassembly during tool maintenance