Plastic Screw Head Concealment Cover Caps or Plastic Screw Drive Concealment Cover Caps, Plastic Screw Caps, Plastic Screw Head Caps, Plastic Screw Hole Plugs, Threaded Fastener Caps, Screw Masking Products, Screw Hole Plugs and Fixing Blanks. This range of Products are all designed to help you mask and conceal Screw Heads, Cams, Rivets by inserting into the Drive Mechanism or purely by blanking the Holes left behind where a Fixing has been inserted or removed.