WIRE STOP ® Cut HUB 501C for all commonly used EHS strand applications (3/8",5/1",1/4",& 3/16") (Conforms to ANSI A300 standards) The wire stop ® hub is the middle of a hub and spoke system for joining three trunks or leaders together. It's less damaging than triangulation because it only requires three holes instead of six. Also it requires less than half the parts (13) than is required in a traditional system installation (31). The cut hub is the same as the 501 Hub but has flats cut out for the placement of the Wire Stops.