2" Round retractable tape Measure Keychain has a release button on the back. The 60 inch long flexible tape inside measures inches and centimeters. Search Term: Measuring tape, tape measure keychains, tape measure key chains, tape measure keyrings, ruler key-rings, measure keyholders, promotional keyrings, Retractable mini measuring tape key ring, tape measure key tag, Key chain with measuring tape, tape measure with key chain attachment