Global Truss DT-TA34 Adapter for F33 or F34 TrussThe Global Truss Adapter for F33 or F34 Truss mounts on stands with a pin up to 1. 38", such as the DT 3800L 3900L and DT PRO4000 PRO5200. The adapter is most often used in pairs with one adapter on each end of your horizontal truss. Each adapter provides two anchor points to support and cradle your truss, with pins preventing your truss from popping off the adapter. The truss mounts can slide along the adapter to adjust for different size trusses