PACKAGE CONTENTS: You will receive 16 360 self-adhesive ball rollers, including 8 mini black body self-adhesive ball rollers and 8 mini white self-adhesive ball rollers to meet your installation and replacement needs. The self-adhesive mini ball rollers are suitable for most smooth surfaces and have good load-bearing capacity. TRIPLE BALL ROTATING PULLEY: The 360-degree self-adhesive ball pulley is made of ABS material and 3 steel balls that can rotate 360 degrees. The material is strong, reliable, wear-resistant, crack-resistant, and even quieter. A triangular furniture caster is formed between the three steel balls, which improves the stability of the caster and makes our mini kitchen utensil caster more durable and resistant. HIGH LOAD CAPACITY: By supporting these structures and materials, our furniture casters are more compact and lighter than old models, and have a high load capacity. 4 adhesive rollers together can support a weight of 100 kg. This allows you to move heavier