Check the listing for details. 4 Pcs Self Adhesive Universal Pulley Stainless Steel Mini Swivel Caster Wheels. Condition: New. Listed at 6.99 USD. 4 Packs Self Adhesive Mini Swivel Caster Wheels 360° Rotation Ball Caster Stainless Steel Universal Wheel Ball Transfers Pasted on The Bottom of Storage BoxJust paste the Stainless steel universal wheel on the bottom of the box, and the heavy box can be easily moved! Suitable for moving and cleaning, it can be applied to various types and sizes of storage boxes and packing boxesThe roller stand is made of high quality ABS and Stainless steel material, which is firm and wear-resistant, with long service life. It can easily move heavy objects without pressure.Mini casters are suitable for all kinds of storage boxes, storage boxes, trash cans and heavy boxes, etc. The practical mini casters help you move heavy boxes easily.Casters wheels are made of strong ABS material and small stainless steel balls, sturdy and durable, with a maximum load of 8kg.You need simply peel the film on the back, then firmly press onto the smooth surface, It is better to use 4 stainless steel adhesive caster wheels to stick to the 4 corners of the bottom of the box. After pasting, it is recommended to wait 24 hours before using.- Made of Strong Eco-friendly ABS materials and 304 stainless steel ball, it will has a long-term service life and with a maximum 8kg load-bearing capacity, sturdy and durable.