Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Rotate 360 degrees. Super Silent & Sturdy. Soft and non-skid wheels won' mark floors Capacity: 100 lb for 4 casters. Bearing: Single ball bearing( 606zz bearing). Brake: ONLY locks the Wide range of uses: Commonly used for small projects and movable furniture including dressers, crates, chairs, under bed , shoe bins, toy bins, cabinets, bookshelves, easel, plant stands, footstools, etc... swivel casters can be used in both industrial and residential applications Ball bearing: Single ball bearing. colour: Silver + brown material: TPR+ metal size: Dia.: 1 inch (25mm), Width: 0.5 inch (13mm), Overall Height: 1.5 inch(38mm), Plate Size: 1.5 inch (38mm) x 1.3 inch (33mm), Hole center to hole center: 1.2 inch(30mm) x1 inch(25mm), Mounting hole diameter: 0.15 inch(4mm), Screw Size: 4mm (diameter) x 16mm (length), Package Contents: 4*Universal casters (2 with Brakes & 2 Without) 16*Screw Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.