MAKITA | Dry Cut Masonry Saw 12 Amp 4-3/8-Inch | 4100NHAMPS 12 Watts Out 1 The Makita 4 3 8 Masonry Saw (model 4100NH) is a powerful cutting solution that is ideal for a range of applications including stone, tile, and concrete. The 4 3 8 Masonry Saw is powered by a 12 AMP motor, with 14,500 RPM and a cutting capacity of 1 3 8 . Convenience features include a lock off button, and a flat rear side motor housing that allows for easy blade changes. The saw weighs only 6. 5 lbs. for improved operator comfort.