nVent CADDY Pyramid RL Roller-Based Supports offer an ideal solution for mechanical piping systems. Long-lasting performance is ensured by providing polymeric rollers for corrosion free rotation. nVent CADDY Pyramid RL Roller-Based Supports are specially designed to avoid formation of flat spots and seized rollers during expansion and contraction. Superior load distribution and a low abrasion foam interface combine to ensure that the roof membrane is protected despite varying roof surfaces and shifting caused by expansion and contraction.