MP211700AV This series industrial style plug has a thread size of 1/4" with a female NPT connection to provide a quick, convenient and reliable method for changing between air tools. There are 2 plugs per card. For your satisfaction there is a 1 year limited warranty on this product. Specifications: -Weight: 0.13 lbs. -Warranty: 1 year limited -Dimensions: 4.8" H X 1" W X 2.8" D