"KEY-WRITE" KEY ID SLEEVES *Sleeves are colored heat- shrink plastic *Slide the sleeve over the head of the key and apply heat while holding the sleeve in place *The sleeve shrinks to form- fit the key head providing a writable surface *The best pen for this use is the "Sharpie" Industrial *Yellow, red, blue and green *Clamshell *Medium *Clamshell of 8