Features of Bus Bar:

Suitable for trucks, RVs, coaches, boats, etc.
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: surface screw fixed installation.
Black/Red color allowing easy and clear color coding for wiring.
Heavy duty terminal stud (up to M8, that's 5/16'').

Specifications:
Material: Nylon, Glass Fiber reinforced
Maximum working voltage: DC 48V, Up to 150 Amp
Maximum amplifier per circuit: determined by the connected wires
Stud Size: M8, that's 5/16''
Total Size: 45 x 43 x 32mm/1.77"x1.69"x1.26"(L*W*H)
12V,48V

Important Note:
Please be gentle when tightening or the nut threads will strip out. The nut thread is used for fixing, it can be used when it can be touched, and there is no need to squeeze the nut thread vigorously.
Maximum working voltage of distribution block is DC 48V, Up to 150 Amp. Not for big terminals or high Amp usage.
Due to the light problem, there is a color difference in the photo of the product. Thanks for understanding.