Our DPS keychain units and refills have 1/2 oz. of DPS X-Stream Range™ Pepper Spray in them, firing an amazing 15 feet! Don't settle for a lesser spray, spend the extra $1.00 and get the best! DPS is our brand and we are very proud of it. When we developed this formula we were looking at the best qualities of sprays to date and wanted to improve them. Between the distance, delivery and effectiveness I believe we found it and we have it for you.