[Product function]: Install the charging column through the main panel, which is convenient and quick to use the battery terminal [Scope of application]: In the power supply system of automobiles, , ships, yachts, racing cars, agricultural vehicles, etc. [Easy to Install]: Durable High Quality Material - Each heavy duty battery post is made of high quality material, made of copper core bushings and brass nuts for maximum power transmission. The other side of the post has a 20MM stainless steel stud to handle the largest battery cable lugs [Mounting Bracket]: The powder-coated steel mounting bracket holds the battery posts securely in place no matter where you install it. This battery terminal relocation kit is a must have for your equipment, car, boat, recreational vehicle, tractor, UTV or ATV Product material: rubber + zinc alloy + brass color:Black Stud size: 20MM Opening diameter: 32MM Rated current: 250A Package Contents: 1 set x Battery Charging Posts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.