No more scrabbling around in drawers looking for a bottle opener, no more breaking your teeth. Beer buddies are cast from durable resin with a real metal finish, ideal for outdoors, but why stop there? Perfect for Kitchens and Next to the BBQ. Cast in resin with a real metal surface (Aluminium) The metal is applied to the surface mould before it is filled and bonds to the resin as it sets. The opener part is made from Zinc alloy.