Larger 201 STAINLESS STEEL BALL in ABS bracket not only withstands wet environment but also rolls more smoothly compared with other small balls. Low profile casters won't raise too much height(only 1inch) and yet can support a good amount of weight( 28 lbs per wheel). 28 lbs each wheel. Total 110 lbs for 4 wheels. Wheel Size: Total height 24mm (1 inch) , mounting plate diamater 44mm (1-3/4 inch) , mounting hole diameter 4mm, distance between diagonal holes 36mm. PEEL & STICK! DONE! Install adhesive swivel wheels on the bottom of mop bucket or the feet/legs of home furniture such as coffee table, shelves,cabinets,dressers,plant stands with included adhesive pads or screws. Make moving bucket and furniture quick and easy.Tips: 1. These castor rollers only work on smooth and hard surfaces, may leave tracks on wood surfaces. 2. We suggest you use screws to install casters wheels for heavy objects. Not only for furniture such as storage containers, cabinets, cupboards, night stands but also for mop buckets, trash cans, bins, planters, coffee machine, underbed storage drawers, tool box, air purifier, standing/tower fans, coutertop appliances such as coffee machine, air fryer, mixer... WIDE APPLICATIONS - adhesive swivel wheels are commonly used for coffee table, desk and chair, coffee machine, ottoman, storage bin, trash can, mop bucket, planters, shelves, cabinets, dressers, plant stands, container box, your DIY project. Quantity:8 Pack/4 Pack Colour:Black Material:Stainless steel Package Contents: 1set * stick on wheels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.