Only one size for this Finger rings,because of it's made of Silica Gel , so it's elastic and suitable for every size of scissors finger. Finger inserts for grooming shears are bigger and create a better custom fit. These can adjust to most shears and provide comfort and control. Bigger size allows better control for grooming shears and newer material helps create better finger grip, helps prevent calluses. Soft Thumb Ring Sizer for Grooming Scissors. colour:Color mixing Material:rubber size:25*18cm Package Contents: 50 * Silicone Ring Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.