Magnesium Metal Housing provides lightweight and durable construction Tool-free selectable trigger lets you conveniently and quickly change between contact and sequential firing modes Rear-loading magazine with bypass pusher for quick, 2-step reloading Powerful motor can drive 3-1/2 in. x 0.148 in. framing nails (16D common) into the hardest engineered lumbers Dry-fire lockout extends the motor life, prevents misfires, and prevents marring of the work surface Over-Molded Handle and Trigger: Rubber overmold interlocks with the metal housing for maximum durability and prevents the grip from twisting Exhaust diffuser with muffler automatically directs exhaust away from user Tool-free jam clearing door provides easy access to clearing infrequent jams Aggressive toe-nailing claw reduces slipping during angled nailing No-mar pad keeps work surface clean of tool marks Lifetime Service Agreement with registration within 90 days of purchase Includes: (1) R350RHF 21-Degree 3-1/2 in. Round Head F