The Milwaukee M18 FUEL 2991-22 cordless 2 tool combo kit delivers the most advanced 18-Volt Cordless technology in the industry. This kit features 2 M18 FUEL 18-Volt Lithium-ion brushless cordless tools including a 4-1/2 in. to 5 in. small angle grinder and 3/8 in. compact impact wrench. M18 FUEL is fully compatible with the Milwuakee M18 18-Volt Cordless system, featuring over 250+ tools. M18 FUEL features the most advanced Cordless technology in the industry, a POWERSTATE Brushless Motor, REDLINK PLUS Intelligence and REDLITHIUM Battery Technology, resulting in longer motor life, longer run time and more power. The Milwaukee 1/4 in. M12 FUEL Right Angle Die Grinder is the first cordless right angle die grinder that delivers the performance, size and speed professional service mechanics demand. The Milwaukee M12 REDLITHIUM CP2.0 Battery delivers up to 2X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries.