Description: Fused On/Off Automotive Fused Relay 12V 30A 4-Pin High cranking power,reduce startup switch electric current Built in fuse socket with included 30A blade fuse with heavy duty 14AWG wires for main contact. 4-Pin SPST (Single Pole Single Throw) Relay. 12VDC (14V Max) and 30A High Switching Capability. Specification: Size?L*W*H?: 33*33*25mm/1.30*1.30*0.98inch Package Includes: 1 Piece Starter Relay