The company’s drywall rasp features three grinding sections and patented teeth that are clog-free and work in both directions. There’s a coarse tooth section for fast drywall edge trimming and shaping. The section is recessed, forming a channel to contain the drywall edge and prevent wasted strokes. The channel will accommodate drywall up to 7/8 inch thick. The teeth are staggered to prevent clogging and allow drywall dust to accumulate inside the handle for controlled disposal. There’s also a fine tooth section, raised to facilitate edge beveling or finish work, and a side rail tooth section for notching or spot grinding tasks.