It comes with rust free, durable, Ceramic rasp teeth ( 10 times more durable than metal teeth, compared to Tajima's metal rasp teeth ) and is ideal for super hard gypsum boards. Also it makes easy to file the inside corner.

• Rust free, durable, Ceramic rasp teeth ( 10 times more durable than metal teeth, compared to Tajima's metal rasp teeth )
• Ideal for super hard gypsum boards
• Angled rasping for any corners
• Double-sided drywall rasp
• The tetra teeth grabs the material and cuts 20% more than a fixed blade
• Non-slip elastomer grip for a secure hold
• Lightweight