Sturdy MaterialMade of high quality steel + ABS plastic, the shuffleboard rollers are durable, rustproof and damageresistant, bringing you a lot of fun.Size DetailsThese mini shuffleboard sets are 23x23x7mm 0.9x0.9x0.3 inch Weight 13gpiece, perfect for any stationary shuffleboard and bowling curling table.Package Includes8 red shuffleboard rollers and 8 blue shuffleboard rollers, enough quantity to meet your different needs.Steel ball bearingsThe shuffleboard glides smoothly on the playing surface, simulating real curling and shuffleboard, bringing the most fun.Fun Indoor LeisureThese shuffleboard curling wheels will bring you and your family many unexpected happy hours, help you control your strength, improve your eyehand coordination and make it more exciting and fun.