The dewalt dcd991 brushless drill driver has a three speed all metal high performance transmission that has been optimised for fast application speeds and improved run time the dewalt built high power high efficiency brushless motor delivers up to 57 more run time over brushed motors with a heavy duty 13mm ratcheting keyless chuck with carbide inserts for superior bit gripping strength also fitted with a 3 mode led that provides lighting in dark or confined spaces up to 20 times brighter than pr