Extended reach dual head straight foot air chuck for inner duals has is designed and manufactured to exacting standards. The extra reach of 12" is great for inflating the inner duals. Sealing type chuck is closed and is for use on an airline. With a cushioned grip handle, this air chuck also locks onto tire valve thread. Not for use with an inflator gauge. Maximum pressure of 150 PSI. These are not for use with an inflator/pressure gauge.