Makita XCU01Z 18V LXT Lithium-Ion Cordless 4-1/2" Chain Saw, Tool Only Makita-built motor delivers 980 FPM for increased cutting speed 4-1/2" guide bar is ideal for limbing "Tool-less" chain adjustments for convenient operation and maintenance Zero emissions and reduced maintenance Equipped with Star Protection Computer Controls to protect against overloading, over-discharging and over-heating