Dimensions:

Square- approx 1.5" square , total length of keychain approx 3.5"

Round- metal piece approx 1.55" in diameter , total length of keychain approx 3.5"

Bottle Opener- metal piece approx 1.25" wide X 2" length, total length of keychain 3.75"

Rectangle- metal piece approx 1" wide x 2" long, total length of keychain 4"

*engraving not included*