<ul><br /><li>Makita-built variable speed motor delivers 0-6,000 strokes per minute for faster and more efficient cutting</li><br /><li>Designed to cut openings in installed board with an adjustable blade depth up to 1-3/16 (9/16" in wood)</li><br /><li>Cuts up to 984 feet of 1/2" drywall on a single charge using 4.0Ah battery BL1840B (battery not included)</li><br /><li>Short 1/4" stroke length with adjustable blade depth helps prevent damage to objects behind the board being cut</li><br /><li>Clear dust box for dust containment with increased visibility for operator convenience</li><br /></ul>"