General description The CSPARKV Chainsaw Sharpening Kit is designed to provide the easiest and fastest way to sharpen dull chains. This comprehensive rotary tool accessories set includes a sharpening angle guide and whetstones, ensuring your chainsaw is always ready for use. Technical specifications Compatible with Dremel rotary multi-tools: 200, 285, 300, 3000, 395, 398, 400, 4000, 4200, 4250, 4300, 8000, 8100, 8200, 8220, and 8260 Installation The sharpening angle guide attaches easily by unscrewing the nose on your multi-tool and screwing the guide on.