the motion pro chucks and gauges have swivel heads and dont leak.....they make the process easy.. pricey yes but like carhartt work clothes buyem once...1) Adjustable (!) Air Chuck:
This is another possibility, one that I forgot I had on my shelf:
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Pro Fill™ Air Chuck - Motion Pro
Motion Pro - High quality cables, tools and controls for motorcycles, ATVs, snowmobiles and personal watercraft.www.motionpro.com