Dual 5/16 inch stainless steel stud, lock washer, and nut, which is sturdy and rust-. The base is made of flame retardant plastic to protect your safety, ensures great mechanical strength and durability. The battery junction block is measured 1.77inch x1.69inch x1.26inch. Stud size: M8. Maximum working voltage: DC 48V & up to 80Amp. Maximum amplifier per circuit: determined by the connected wires. Glass Fiber reinforced Nylon base ensures great mechanical strength and durability. The base is made of flame retardant plastic to protect your safety. Allow terminating of heavy-dutycables for one or more connections. Installation method: screw fixed installation. Black/Red color allowing easy and clear color coding for wiring. Heavy duty terminal stud (up to M8). Application: The positive and negative terminal stud is useful for customizing vehicles or relocating batteries. Applicable to 12-48V trucks, RVs, coaches, boats and other industrial equipment. Colour:black Material:nylon+stainless steel+copper Size: 46 x 43 x 35mm Package Contents: 3 x Terminal Block Studs 6 x screws 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.