This concrete mould is made from thick ABS plastic. It is a reusable mold and you'll be able to make loads of these signs! Simply wash in warm (NOT hot!) soapy water after each use and it will last you for years! (Not suitable for the dishwasher!).
Your concrete casts would be great for adding to brick built barbecues, or simply to use as a sign near the barbecueing area of your garden.
Each sign you make from this mould will measure APPROX. 9½" x 4½" (24cm x 11cm) and they will be just over ½" deep.