The DEWALT DW6184 Fixed Base is designed ot fit the DW616/618 Routers. The micro-fine depth adjustment ring provides precise depth adjustments in 1/64" increments and adjusts vertically for a constant switch/cordset location. Adjustable, tool-free steel motor cam lock makes depth adjustment and base changes quick and solid-locking, with quick release motor latches for fast and easy motor pack removal for bit and base changes. It has rubber overmolded handles and a low center of gravity design which provides best-in-class comfort, balance, and control. A heavy-duty, precision machined, die-cast aluminum base and motor housing for durability and low tool weight.