A1103 Dual Foot 10-120 PSI Bayonet Style Tire Inflator w/ 12" Hose 2-9/16" ID The ball foot chuck features

The ball foot chuck features an ergonomic angle

Wire leads sealed to housing port

or crimped on hose fittings

But why settle for a knock-off when you can have the original - from Boston Gear

worms and worm gears operating together must have the same diametrical pitch and threads

A1103 Dual Foot 10-120 PSI Bayonet Style Tire Inflator w/ 12" Hose 2-9/16" ID The ball foot chuck featuresThe ball foot chuck features an ergonomic angle. Ball Foot style chucks also enable plenty of clearance for many styles of wheels. The clip on chuck feature eliminates the need to keep the chuck constantly engaged by hand during filling operations. Dual Foot Chucks allow for the filling of dual tired trucks and trailers. Straight chucks often provide an easier way of engaging and holding the chuck onto the tires valve.