This truss adapter is suitable for 51 mm truss systems. Combine this truss adapter with one of the poles from the Connect-it Series (PUC 2108, PUC 2115, PUC 2130, PUC 2308, PUC 2315 or PUC 2330) and a Connect-it interface (PFI 3010, PFI 3020, PFI 3030 or PFI 3040) for a complete truss solution.