Dual 5/16 inch stainless steel stud, lock washer, and nut, which is sturdy and rust-resistant. The is made of retardant plastic to 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 ensures great mechanical strength and durability. The is made of retardant plastic to your safety. Allow terminating of heavy-dutycables for one or more connections. Installation : surface 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:red Material:nylon+stainless steel+copper Size: 46 x 43 x 35mm Package Contents: 1 x Terminal Block Studs 2 x screws Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.