The Yamaha RDC-10 square multi-clamp is designed for use by marching and concert percussionists with either the Yamaha Tough-Terrain Frame or the Yamaha Multi-Frame II. Four clamps come with each model of Multi-Frame II instrument and are sold separately when additional accessories are needed. Each clamp enables the player to mount a variety of accessories such as a cymbal arm, a snare basket, a concert tom or other additional accessories they want to use during their performance.