STABLE WEIGHT BEARING: Made of high-quality material with built-in steel balls, it is incredibly sturdy. A single wheel can carry a load of 27.5 pounds, and four wheels together provide a maximum weight capacity of 110 pounds. You can add more wheels as needed. Smaller wheels do not get crushed, even within the weight capacity. SMOOTH MOVEMENT - 360 DEGREE SWIVEL: Mini swivel wheels with a low coefficient of friction allow smooth movement with a gentle push. Rotate furniture 360 degrees without dead angles for easy maneuverability. QUICK AND EASY TO INSTALL: Just peel off the backing paper and stick the wheel on the bottom of the appliance or furniture. It is recommended to let it sit for 24 hours after application for optimal adhesion. Enables easy movement of appliances or furniture without drilling or damage. WIDELY USED: Self-adhesive casters are suitable for various kitchen appliances such as air fryers, coffee makers, stand mixers, toasters, microwave ovens, and also for furniture and items like storage bins, trash cans, plant shelves, under-bed storage drawers, small toolboxes, dressers, small printers, toy boxes, etc. COLOR: As Shown MATERIAL: Plastic + Metal PACKAGE CONTENTS: 8 x Pulley Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.