Raise the roof with Global Truss! The Global Truss aluminium CA-3 truss sleeve is designed to work in conjunction with the aluminium Top Pulley and Steel Ground Support Base to enable the simple lifting of the roof of a stand or cross bar. The CA-3 sleeve block slides over the F34PL truss, with conical points on all 4 sides for use with F34PL, F44 P or F44 standard.  Supplied with 8 pieces of PL half conical, which may be interchanged with Standard half conicals if required. Additional half conicals available separately.