Slipstick set of 4 premium furniture risers add 3 in. of height to beds/furniture and are great solution for making additional storage space. The added height also makes cleaning under furniture easier (great for robot vacuums). Each riser features a steel reinforced plate under the furniture leg holder / caster cup that prevents bed posts, bed rollers, caster wheels or furniture legs from puncturing through. Risers feature a 1-in. deep recessed holder cup with memory foam cushion pad built into top that securely locks in caster wheels, bed rollers / posts and furniture legs up to 3 in. round or 2-1/4 in. square at foot. This set of 4 risers supports 2,640 pounds (660 pounds per riser cup) and each riser features 3 small rubber grips on base to protect floor and prevent furniture from sliding. To raise furniture height 8 inches, stack on top of Slipstick CB671 5 in. risers (sold separately).