FastCap FC.MB.916.BC Bourbon Cherry Screw Caps Peel & Stick PVC 9/16" 260 Caps FastCap Screw Caps- The finishing touch is a professional job... Fastcap is a self-adhesive cover cap made of durable PVC or unfinished/prefinished real wood veneers. 70 STOCK COLORS! It is available for a wide variety of applications from covering RTA fittings to trimming plumbing cut outs in sink cabinets.