Features: Excellent durability, stainless steel studs and screws is anti-rust and anti-corrosion at-sea. Base: Fireproof plastic. Glass fiber reinforced Nylon base with optimal-mechanical strength and durability. Nickel-plated copper busbar contact plate has low resistance, maximum conductivity and anti-corrosion-protection. High temperature resistance, abrasion resistance, and-safer use. Terminal bus bars are-ideal for car and marine boat wiring, helping to organize and clean up messy wiring, suitable for all types of power and ground distribution. Environmentally friendly flame-retardant nylon base has best mechanical strength and durability. Stainless steel studs and screws are anti-rust and anti-corrosion, suitable for any environment. Widely used for car, pickup, Trailer, RV, motorcycles, recreational vehicles, truck, caravans, yacht, boat, etc. Easy to install. Specifications: Material: Plastic Size:Approx.10.3x5x5.5cm/4.05x1.96x2.16inch Size:Approx.10.3x5x6.8cm/4.05x1.96x2.67inch Color: Black/Red Package Includes: 1x Terminal Block note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.