Track Bracket 3 Way Edge Clamp. Compatible with 16RT Roller Track. Attach track bracket to edge of flange on a beam, roof truss, or channel by securing with set screw. Edge Clamp permanently welded to bracket. Mounts three pieces of 16 Roller Track with one bracket. Does not provide ability for trolleys to transition. For mounting purposes only. Edge Clamp 0.95 inch opening clearance.