These are lite wheels with a new tread design for more realistic looks. Features: New Tread design for more realistic looks Same light weight, low bounce material as use before in previous wheels. Snap together fit Threadless hubs assure snug fit Specifications: 3¼" wheels Drilled hole for 5/32" axle 7/8" in width . pair . 11-28-93 KrH updated 5-11-95 kaw Weight per wheel- 1.06 ounce updateaxy5/23/98