When you hear plastic, you think cheap or weak. But the misconception is the word plastic. We use a 6000psi ABS mix of 3 different materials plus proprietary additives for The Solid Mount, which gives us our strength. Also, remember, many parts in machinery, cars, motorcycles, and other items have components made from the same base 6000psi mix we use. When properly installed, The Solid Mount meets or exceeds UBC (universal building code) and Canadian specs of 300lbs.