The QUICKDRAW Marking KeyChain keeps your refills close at hand so you're always ready to rock with the QUICKDRAW Marking Tape Measure. The keychain itself is designed to show you how the patented QUICKDRAW marker works, and comes with 10 graphite stick refills (0.9mm BLACK). Each stick will deliver 2000+ 1/4" marks, so that's 20,000+ 1/4" marks, total. It will lock on to your tool box or belt for easy access. Never look for a pencil again.