Built-in spongesMade of high quality materialThis tire is designed to fit 1.0inch wheelExcels on wet or ultra-low traction surfaces to offer good gripSuit for 1/24 RC Crawler Axial SCX24 or other mini crawler carTool Supplies:Assembly CategoryRC Parts & Accs:Servo AccessoriesUse:Vehicles & Remote Control ToysTechnical parameters:Value 2Remote Control Peripherals/Devices:ReceiversFor Vehicle Type:CarsFour-wheel Drive Attributes:AssemblageWheelbase:Screwscolor:BlackMaterial:rubbersize:51 x 20mmPackage Contents:4 x RC Car 1.0 inch TiresOnly the above package content, other products are not included.Note: Light shooting 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.