I never thought of drilling the fittings.
I just measure one of my fittings and it's 3/16 of an inch.
I think I need to upgrade my fittings in my hose. What I have works with my brad nailer and my quarter inch senco stapler....... but wow, that's an awakening.
Thats like using a 40 foot, 16 gauge cord on my edger sander.
My Makita compressor has locations for two hair chucks
I need to upgrade mine and switch one of them to a larger diameter.
I just measure one of my fittings and it's 3/16 of an inch.

I think I need to upgrade my fittings in my hose. What I have works with my brad nailer and my quarter inch senco stapler....... but wow, that's an awakening.
Thats like using a 40 foot, 16 gauge cord on my edger sander.
My Makita compressor has locations for two hair chucks
I need to upgrade mine and switch one of them to a larger diameter.