Package includes 1 x locking air chuck Product overview A compact locking air chuck adapter for converting a twiston inflator hose to a lockon connection. Dimensions approximately 10 x 2 x 1.5 cm. Black finish with metal body and rubber sealing components for a reliable, airtight connection. Key benefits Converts twiston hoses to lockon chucks quickly, allowing hands inflation and reducing the risk of accidental disconnection. Locking head and rubber seal provide a tight, leak connection so inflation is faster and more efficient. Durable metal construction with rubber sealing parts for repeated use on tires, pumps, and gauges. Standard Schrader valve thread compatibility for use with most USA standard car valve stems and many bicycle and motorcycle inner threads. Features Size: approximately 10 x 2 x 1.5 cm. Materials: metal body with rubber sealing components. Color: black chuck. Easy installation: screw the adapter onto the original inflator hose, press the chuck onto the valve, and the lockon action holds it in place while inflating. Universal fit: compatible with Schrader valves and many twiston inflator hoses that accept an innerthreaded adapter. Portable and compact design for storage in a tool kit or glove box. Typical use scenarios Home or garage car tire inflation: attach the adapter to a standard inflator hose and lock it onto the valve for steady, hands inflation while monitoring pressure. Bicycle or motorcycle maintenance: use with compatible inflator hoses to speed up tire inflation and ensure an airtight connection on Schradertype valves. Inflating air mattresses or other inflatables that accept Schraderstyle fittings: convert a twiston hose to a secure lockon connection for easier filling. Technical notes and compatibility Fits standard Schrader valve threads used on most USA car valve stems. Designed to convert a twiston inflator hose to a lockon connection; check that your inflator hose accepts a screwon adapter before use. Package includes one locking air chuck adapter only. This locking air chuck is a practical tool to improve inflation speed and reliability for vehicles, bikes, and compatible inflatables.