Small Swivel Caster Wheels 4pcs 1 Inch Locking Casters Diameter 6.25mm Straight Stripes Stem Easy Clip on Replacement Wheels for Rolling Plastic Drawers Carts Boxes Shelves with Reserved Holes

2. Please check diameters of your original caster and plastic box's hole carefully. It's important for you to choose right sized replacement wheels effectively. | 3. Once you're sure our caster stem type and size is workable for your replacement or diy use, you'll get 4pcs 1inch swivel caster wheels with locking brakes for flexible controlling wheel's rolling and standing. These small caster wheels can help box to load 100 pounds weight things. | 4. Easy for installation. Pull off your old wheel from plastic hole, push in our new caster's M6 straight stripe stem rod into the hole tightly. Just need your hands and 1 minute, you'll install a set of 4pcs new smooth swivel caster wheels. If there's some gaps during practical installation, you can try to add some paper shims or teflon tapes to solve. | 5. Size details for 4pcs 1 inch straight linear type stem caster wheels. Silver rod part is diameter 6.25mm plus or minus 0.03mm, height 14mm plus or minus 1mm. Black wheel part is diameter 1 inch, size is similar as a Dollar coin. Wheel Standing height is 51mm or 2 inch.