Gibraltar SC-4425XHMB X Hat on 4425MB Mini Boom Arm X Hat on 4425MB Mini Boom Arm SC-4425MB Mini Cymbal Boom Ratchet Tilter - 7/8" diameter tube 10" down tube length SC-XHAT Hi-Hat Cymbal Tilter Attachment - Fits into 8mm cymbal tilter to add Hi-Hat on top of existing cymbal. (1pk)