[Package Includes]: There are 24 pieces self adhesive wheels in our package. Sufficient quantity can meet your daily needs and replacement. Each one measures approx 4.5x2.2x1.5cm/1.8x0.9x 0.6inch [Quality Material]: Made of quality ABS material and strong glue, the mini casters are stable and durable with a long service cycle. It can be firmly pasted to the surface of most materials tightly without residual glue leaved [Practical Tools]: With the two-wheel design, things can be balancedly placed on the casters. The load capacity of 4 caster is about 8kg/17.5lb. Smooth surface and good workmanship will prevent you from scratches and shrill noise [Wide Application]: These mini caster wheels can not only be applied on trash cans, storge bins, containers, boxes, but also are suitable for DIY crafts, kid's toy cars, etc [Easy to Install]: Tear off the protective films and paste the non-marking stickers on the bottom of casters and the 4 corners. Standing still for 24 hours. These caster wheels fit for most surface , such as plastic, cardboard, stainless steel, etc