Outside Diameter 31/32": 0=9/16, 0.5=37/64, 1=19/32, 1.5=39/64, 2=5/8, 2.5=41/64, 3=21/32, 3.5=43/64, 4=11/16, 4.5=45/64, 5=23/32, 5.5=47/64, 6=3/4, 6.5=49/64, 7=25/32, 7.5=51/64, 8=13/16. Outside Diameter 1-1/32": 8.5=53/64, 9=27/32, 9.5=55/64, 10=7/8, 10.5=57/64, 11=29/32 Available in 25 Sizes! All three varieties of the“Ultimate Combinations” are available in half sizes: 17/32, 35/64, 9/16, 37/64, 19/32, 39/64,5/8, 41/64, 21/32, 43/64, 11/16, 45/64, 23/32, 47/64,3/4, 49/64, 25/32, 51/64, 13/16, 53/64, 27/32, 55/64, 7/8, 57/64 and 29/32. Twenty-five sizes in all three varieties in colors of neon, clear, yellow, white, pink, green, orange, blue, purple, black and red.