We manufactured carbon fiber washers for a customer's request to adjust the height of the bumper rubber for a billiard cue's bad end! *We are not familiar with billiards, so please make your judgment based on the images. Size: Outer diameter: φ21.8mm Inner diameter: φ14.0mm Thickness: 1.0mm Plain weave, glossy Set of 4 As a carbon fiber processing specialist, we can accommodate other desired sizes and quantities!