Red Mahogany Fastcaps adhesive screw covers work great to conceal your countersunk screws on cabinets, furniture, point of purchase displays and elsewhere. Fastcaps simply peel and stick on to add a finishing touch! Red Mahogany Fastcaps are 9/16" diameter and just 1/32" thick. Material is high impact PVC plastic. The adhesive will cure and get stronger over time. Also, adhesive is waterproof when applied to a clean dry surface and allowed to cure. Bulk available.