Headwind Consumer Products RAISE ITS T5-B6VE-0U8U Furniture Riser, Black 1"x4"x4" (8 count) (820-0535-S) Raise Its are made from extremely durable black plastic allowing 600lbs capacity per leg and interlock as they are stacked upon each other They have recessed and raised points on the surface to allow casters, wood posts, and many other types of furniture leg styles to fit on top of them safely and securely in the 1"x4"x4" space Raise Its have a non-slip insert that keep it from slipping on hard surfaces that allow you to safely and securely adjust your furniture height without fear of them sliding away Raise Its easily adjust furniture to increase storage space, make furniture more user friendly, and improve ergonomics A product you can trust. Made in the U.S.A.