Write on key tags can be marked using pencil, ink or permanent marker Also use as plain key tags that accommodate 1 or more keys. Will fit MMF Dupli-Key(R) or similar style key cabinets or trays (sold separately). Dimensions: 1-1/4in.H. STEELMASTER(R) Snap-Hook Peg-Style Key Tags, Assorted Colors, Pack Of 20 is one of many Key Control & Locks available through Office Depot. Made by STEELMASTER.