Available in three sizes to accommodate track spacing requirements for the Constellation, the Level 5/Sparkle, and Knuckle Hi-Hat platform dolly systems, the dolly track brackets are designed to provide a very tight and secure grip. Secure tightening is a breeze with individual wing-nuts for each clamp. Numerous mounting options come standard with 3 M6 holes for half ball adaptors, 3/8 through-hole, and a 5/8 stud hole with wing nut for attaching light stands. Additional 1/4 threaded holes provide additional mounting options as 3/8s serve as anchors. This is a pair of rail truss supports for the MYT Constellation system.