2 New, Small rubber Tires, for the Keystone K-520/525/530,550/560-M/K Dual 8,  Projector's, *Most  projectors Use 2 of these Tires,  These Tires are New need a spare or replace your old broken or wore Tires..    NOTE: SEE MY STORE, SEARCH.      Check out my other items!           thank you