Qty 2) new brass heavy duty original style air chucks with Qty 2) compact crimp style clamps. Chuck barb fits 3/16"- 1/4" and 6 MM I.D. hoses. Clamp range is 29/64" - 17/32" This style chuck gives you years of leak proof service and a positive connection to your bike or car style tire filler. The chuck is a two piece design (thumb grip swivels around). Use side cutters or end nippers to close the clamp. Great quality, no disappointments. Ships the same business day with tracking and delivery confirmation !