Made From Crystal Clear Acrylic Material: Our furniture legs are crafted from premium acrylic material and engineered to withstand a significant weight load. Included: Set of 4 furniture legs with pre-installed M8 bolts, 4 M8 bolt mounting plates, 12 screws, professionally written installation instructions, 4 floor protector silicone pads (pre-installed), 2 drill bits, and optional 5/16" bolts (easy to swap out with the included allen wrench in case this is what your furniture is compatible with).