Equipment for vehicles, craft, and means of conveyance, namely, couplings for trailers, drawbeams in the nature of structural parts of vehicles, drawbars in the nature of structural parts of vehicles, drawbar eyes in the nature of structural parts of vehicles, metal beams for connection of couplings for trailers in the nature of structural parts of vehicles, shock absorbing springs for land vehicles, bumpers for land vehicles, trailer couplings with shock absorbing springs to absorb transmitted shocks between two vehicles, couplings and hitches for attaching fifth wheels with or without sliders to land vehicles, under-ride protection bumpers for land vehicles, drop-side pillars in the nature of structural parts for vehicles and curtain side pillars in the nature of structural parts for vehicles, side panel locks in the nature of structural parts of vehicles, front cargo shields and flaps in the nature of fitted liners for the cargo area of vehicles, cargo supports and cargo holders in the nature of cargo carriers for vehicles, attachments and fittings for cargo supports in the nature of structural parts for cargo carriers, cargo platform sides and cargo protection devices in the nature of fitted liners for the cargo area of vehicles, sliding and liftable roofs with or without tarpaulins and parts and structural components for their assembly including devices for pulling and folding mechanics in the nature of sliding roofs for trucks and trailers, anti-skid devices for vehicle tires in the nature of automatically deployed tire chains; automobile chains; driving tire chains for vehicles; tire snow traction chains; structural parts for the aforementioned goods