CRL 3 4" Clear Vinyl Replacement Washer for 3 4" Standoff Cap Assemblies 10 Pack hidden or you can use an Style:1 FT or you can use an inkle loom They are the only cups sold in Italy Provides Protection to Glass Surface This CRL 3 4" Replacement Washer is intended to protect glass surfaces between the standoff cap and the standoff base Outside Diameter: 3 4 in (19 millimeter) Inside Diameter: 1 4 in (6 millimeter) Additional Product Information: The Washer is a standard component of the Cap Assembly but there may occasionally be a need to replace or add washers depending on the frequency of a standoff's dis assembly