Makita 18V LXT 4-1/2" / 5" X-LOCK Angle Grinder, AFT (Bare tool)Makita XAG25Z 18V LXT Lithium Ion Brushless Cordless 4 1 2 in 5 in X LOCK Angle Grinder with AFT, Tool Only Makita delivers grinding performance with the 18V LXT@ Brushless 4 1 2" 5" X LOCK Angle Grinder with AFT@, Tool Only (XAG25Z). The unique feature with this angle grinder is the X LOCK Technology, which is a quick change system for tool free wheel changes. INNOVATION : X LOCK quick change system allows for easy tool less wheel changes PERFORMANCE