Combines the universal clamp with the LCB L-rod to mount most popular percussion instruments and accessories. Can be attached to pipes ranging from 19.1 mm to 28.6 mm in diameterFastClamp Easy Set Up System 1. Open the FastClamp just like a clothespin.2. Close the FastClamp on the stand just like a clothespin.3. The FastClamp holds the clamp in place so you can tighten the T-bolt.