Panasonic EY7550LR2S Cordless, Battery Powered, Rechargeable 18V Impact Driver Kit ? Hex Quick Change 3 Speeds: 1,000Rpm, 1,400Rpm, 2,500Rpm High Power: 3 Torque Levels: 355 In Lbs., 1,150 In Lbs., 1,370 In Lbs., Compact And Lightweight High Capacity 3.3 Ah Li-Ion Battery Hex Quick Change 3 Speeds: 1,000Rpm, 1,400Rpm, 2,500Rpm High Power: 3 Torque Levels: 355 In Lbs., 1,150 In Lbs., 1,370 In Lbs., Compact And Lightweight High Capacity 3.3 Ah Li-Ion Battery