The E Track Rails are versatile and portable, compatible with all E-buckle accessories. Easily and quickly mount them on a wood beam or wall, strong and stable. They can be flexible used anywhere to build extra E Track tie down anchors or freely splice a length and lay them out in position as your needs at any time, even in narrow spaces. Each E Port slot offer supreme quality with a 1,500 lbs Safe Working Load Limit. And the Slots compatible with all standard E Buckle accessories such as E-Track O-Rings, E-Track Rope tie offs, E-Track J Hooks, E-buckle Ratchet/Cam Straps, E-Track Spare Tire Mount bracket, E-Track Wood Holder Beam Socket, etc.