This snap fit blower adapter is perfect for my EP AUTO 12 volt DC. Tire Inflator Model No. AT-010-12. no leaks. High quality flexible rubber hose with nylon sheath. The adapter is 3 inches long. the pressure on the attachment end greatly facilitates the connection with the rod nipple. than the threaded connection on the tire inflator, trying to loosen the screw at the end would leak a lot of air, requiring you to exceed the amount of air in the tire to make up for the lost air. not with such a connection, very little air is lost when disconnected. I have previously bought 2 other types of hose adapters, both from LUMITECO. THEY DO NOT FIT AS LUMITECO PROMISED! The connector on my inflator was exactly as the pitcher described and was the correct size as LUMITECO said my end should be. I was frustrated until I came across Slime 20332. They guaranteed it would fit and everything is great, no leaks. They said if I have a problem contact them and they will take care of it. GREAT PRODUCT AND CUSTOMER SERVICE>>>>>>