Double cavity - 1 1/2" dia. wgt. 12 oz. plus 1 11/16" dia. wgt 16 oz. Moulds are made with a hard warp resistant aluminum alloy, faces are machined smooth and flat, hinges are machined to fit and then tightly pinned to assure a precision line-up. Each mould has replaceable wooden handles. 10 3/8" overall length.