【High-quality materials】: The base is made of nylon plastic, which has excellent mechanical strength and durability. Stainless steel material, durable and practical, will not rust. 【Package and dimensions】: 2 pieces M8 5/16" Battery power distribution terminal block. One each for black and red. Each measures 46mm in length, 43mm in width, 35mm in height. Bolt size: 5/16" (M8). (Same as the picture shows) 【Wide application】: Maximum working voltage DC 48V, suitable for most 12-48V trucks, RVs, coaches, boats, automobiles and other 12-48V industrial equipment. 【Product Features】: The power clamp can be used to terminate one or more connected high-performance cables and ensures clean wiring. 【Easy Installation】Fixed screw mounting surface - two mounting holes make it easy to install in any direction.