The dtd146z 18v lxt impact driver brought to you by makita is a cordless unit that features an ergonomically designed handle with a powerful 4 pole motor its compact design 138mm length makes it easy to handle in tight spaces and there is enhanced dust and drip proof protection as well as a handy battery fuel gauge this impact driver has an ingenious one touch bit installation system that makes bit changes quick and easy and there is an led job light with pre and post glow functions t