Kastar 782 E-Z Grip Dual Head Straight Air Chuck Tool.These air chucks are combined with our E-Z Grip handles to provide comfort and a positive grip when using the air chuck. 1/4 NPT pipe threaded end will accept an air line quick-disconnect fitting. Straight On Dual Head Tools Permits access to hard to reach inner tandem wheels and includes the new tilt-lock feature which locks onto the valve reducing user fatigue.