Mother and Daughter hand stamped keychain set. Stamped on 2" aluminum rectangles that form a cut out heart when put together. Aluminum is a light weight but sturdy metal. It will never rust, tarnish or turn color. More Hypoallergenic than sterling silver. Hand stamping is done by hand one letter at a time with a hammer and a shank. Alignment, spacing and depth may vary which is what gives each piece an individual charm.