Quality Park Pen-Style Envelope Moistener, 50 mL, Pack Of 4

No more licking envelopes! Spill-proof applicator. Convenient size easily fits in your briefcase, purse or desk drawer. Fast drying with a no-clog spring valve applicator. Spill proof plastic bottle is non-toxic and non-flammable. 50 ml pen safely secures over 1,500 envelopes.