Durable, tool steel scraper removes carbon buildup in / bolt carriers quickly and easily. Insert a section of your cleaning rod into the 7/32" hole to act as a T-Handle and turn; dual scraping edges clean in both directions. Compact design is a perfect fit for your range bag or buttstock storage compartment. SPECS: Tool steel, black, matte finish. 2¾" (7cm) long, ½" (12.7mm) wide, 3/16" (4.8mm) thick.