Vise Grips is one of the leading bowling finger insert companies in the world. Finger Inserts should be changed at least every 60 games. We carry all sizes and all colors. This is for a pack of 10 inserts. Sorry, no mixing colrs and/or sizes. This is for a pack of 10 of one size, one color. One side of the insert is an Oval cut and the other side is a blended Power Oval Drill Size 31/32: 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 and 13/16 Drill Size 1-1/32: 53/64, 27/32, 55/64, 7/8, 57/64 and 29/32