Duro's: 60A, 62.5A, 65A, 67.5A, 70A, 75A, 80A, 85A, 87.5, 90A, 92.5A, 95A, 97.5A
 
Each quantity of 1 purchased is a single bushing. You have 2 trucks per skateboard, & each truck takes 2 bushings. So for a complete skateboard, you need to buy a quantity of 4.