The 2197 is an add-on accessory for the Park Tool DT-5 and DT-5.2 Disc Brake Mount Facing Set to enable easier and more efficient facing of disc brake mounts on carbon fiber framesFeatures a brazed-on diamond grit surface that is over 100 times more durable and effective on carbon fiber than the cutter included with the DT-5.2NOTE: The 2197 is intended for facing carbon fiber only. Aluminum, steel, and titanium disc brake mounts should be faced using the #2171 facing cutter included with the DT-5.2Disc Brake Frame Facing AdapterDT-5/DT-5.22197Park ToolFor Carbon Fiber FramesUPC/EAN/GTIN: 763477017314