This saw undercuts doors in place, inside corner areas and can undercut masonry walls and hearths. Features slip-proof height adjustment from flush to the floor to as high as 1 in using dual lead screws for setting and holding the height. The aluminum ratchet front handle is very durable and folds down for undercutting toe spaces. The powerful 13 A motor is geared to produce more torque at a lower rpm and also throws less dust. Dust port can be attached to a vacuum (not included) for dust collection. Doors that are as thick as 1-5/8 in can be undercut without removal. Comes with carbide blade, masonry composition blade, carrying case, blade wrench and instructions.