One side can hold pipes with diameters from 19.1mm to 28.6mm; the other side is a ratchet holder that can hold a 9mm to 12mm rod at all different kinds of angles. One of the best choices for adding a lot of possibilities to your set up. Features FastClamp Easy Set Up System. Do you ever feel like you need three hands to attach a drum clamp?Are searches for dropped and scattered parts a source of constant frustration'that's why Tama's hardware designer came up with FastClamp. It really is as easy