The makita cordless dhr280 is a powerful rotary hammer drill which features a 36v brushless motor powered by 2 x 18v lithium-ion batteries. Brushless motors are more efficient than a brushed motor meaning more run time per battery charge and no maintenance and less heat produced making them more suitable for prolonged use. The dhr280 is a 3-mode machine with rotary hammer for drilling concrete up to 28mm, rotary only for drilling wood, plastic and steel and hammer only mode for chiselling. Features & benefits 3x operating modes anti vibration technology brushless notor constant speed control electric brake forward reverse rotation led job light powered by two 18v lithium ion batteries soft no load function automatically reduces the motor speed during idling torque limiter variable speed control specifications battery voltage: 36v 18v x2 battery type: lithium-ion blows per minute: 0-5,000bpm impact energy: 2.8 J max. In concrete diamond core : 65mm max. In concrete tct core : 54mm max. In concrete: 28mm max. In steel: 13mm max. In wood: 32mm no load speed: 0-980rpm noise k factor: 3db a noise sound power: 104db a noise sound pressure: 93db a shank: sds plus vibration chiselling: 8.5M sec vibration drilling into metal: 2.5M sec vibration hammer drilling: 9.0M sec vibration k factor: 1.5M sec net weight: 3.9-4.9Kg contents dhr280 twin 18v lxt cordless brushless sds hammer drill side handle depth stop bit grease makita makpac type 4 connector case no batteries no charger