Heavy Duty Material The door casters is made of high quality steel, fine finished high strength, good toughness, low creep, abrasion resistance and chemical stability, durable to use Strong Bearing Force The heavy duty caster wheels are designed for loads of up to 660 pounds V groove Design Unlike other groove wheel, V groove fits inverted tracks perfectly and can ease the vibration, no noise and smooth as silk ultiple Usages Widely use,a must get for powerrolling dogbaby gates, industrial carts, assembly fixtures, containers, racks, and other equipment and projects Adapt to Wide Temperature Range The sliding gate track roller can adapt to a wide temperature range, can be used in the range of -30 -100
