Make any tool or accessory E-Track-mountable by bolting heavy-duty E-track connectors to them. E-Track connector fittings move effortlessly between slots and feature 4 square holes that accept carriage bolts. Constructed from thick steel, these heavy duty E-track connectors support loads up to 1,100 lbs. A zinc plating protects against corrosion. It's easy to mount custom DIY projects on E-track. Attach E-track connectors to shelves, boards, boxes or any other accessory and slip into E-track slots. Whether you're a contractor, a professional driver, or just a weekend warrior, this connector is an essential tool for keeping your cargo secure. Create your own line of DIY E-track accessories!