ITEM NAME:6Pcs 4-Pin Fuse On/Off SPST Socket Heavy Duty Relays Switch 14 AWG Description: - There’s no need for a separate in-line circuit fuse holder with this OLS 12V 30A fuse relay switch harness set. - The harness has an interlocking design, so you can group several relays together. - This product is simple to install thanks to the electrical relay’s metal mounting tab. - It is compatible with cars that have a 12-volt DC power source. Specification: - Material: Metal+Plastic - Size:(Approx).20x30mm/0.8x1.2 Inch Package Included: 6 Pieces 30A Fuse Relays.There’s no need for a separate in-line circuit fuse holder with this OLS 12V 30A fuse relay switch harness set. 6 Pieces 30A Fuse Relays. - The harness has an interlocking design, so you can group several relays together.