12mm hex rims. Tires have like new tread. Just needs to be cleaned up and re-glued. Has foam inserts. Has a litte bit of rubber missing by where they glue to the rim. Should be able to glue on still.One rim was crached but now glued and should work for awhile. Can carefully cut away tires from rims if wanted and re glue to new rims. Great around town bashing tires for cheap.