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: 1¾" wheels Drilled hole for 1/8" axle pair . 11-28-93 KrH Weight per wheel- 0.27 ounce Width- 3/4" updateaxy5/23/98