Cut the board, not your knuckles! A¥ Guide rails keep rasp on edge and prevent injury¥ Removes 45% more material per stroke than other popular rasps¥ Will not clog or collect dust¥ Works in both directions¥ Long-lasting premium stainless steel blade¥ Contoured DuraSoft ¨ handle ensures a good grip¥ Ends of blade get into tight spaces¥ Sharp blade can be used on other materials such as backer board and vinyl tile¥ U.S. Patent No's D493340 D494832 ¥ Made in the USA..