20-Volt MAX Lithium-Ion Cordless Combo Kit (4-Tool), 2Ah Battery, 4Ah Battery, Charger, with Tough System CaseThe DCKTS425D1M1 20-Volt MAX Lithium-Ion 4-kit (4 Ah) with a Tough System features our DCD796 20-Volt MAX XR Lithium-Ion Brushless Compact Hammer drill Kit which is lightweight and compact for working in tight spaces for long periods of time. The DCF885 20-Volt MAX Lithium-Ion 1/4 in. Impact Driver is compact and lightweight for fitting in tight spaces and increasing productivity. The DCS393 20-Volt MAX Circular Saw, features a Brushless motor which provides 5200 RPM maintaining speed under load. The DCG412 20-Volt MAX XR Lithium-Ion 4-1/2 in./5 in. Grinder increases productivity with features like Quick-Change wheel release, convenient trigger switch with lock-off button and extended run-time battery. It includes a Tough system with wheels, which features durable and thick structural foam walls, integrated water seal and rust-resistant metal latches.