Just the right angle, inexpensive, and easy to use. As with any air tool make sure you have the correct connector. There are 3 types of which 2 are the most common. I carry one of these chucks and 2 connectors in my spyder should I need to air up while away from home.
https://www.harborfreight.com/exten...MIxanhy_-t-gIVXRitBh2EYwO3EAQYESABEgKo7_D_BwE
https://www.harborfreight.com/exten...MIxanhy_-t-gIVXRitBh2EYwO3EAQYESABEgKo7_D_BwE