M18 FUEL™ 21 Degree Framing Nailer (D-1, SF) REDLITHIUM™ battery technology: superior pack construction, electronics and performance deliver more work per charge and more work over pack life than any battery on the market REDLINK™ PLUS intelligence: provides optimized performance and overload protection using total system communication between tool, battery and charger POWERSTATE™ Brushless Motor delivers longer life and higher performance Pivoting Rafter Hook Belt Hook Tool Free Drive Depth Adjustment On Board Hex Key Storage No-Mar Tip Cover On/Off Power Button Sequential and Contact Actuation Firing Modes Power to Nail Engineered Lumber Fires 3 Nails Per Second No Gas Cartridge Required - Completely Battery Operated Zero Ramp Up Time Dry Fire Lockout