5 Piece Industrial Series Air Tool Quick Coupler and Plug Set Solid Steel

• Attach and remove tools quickly
• Female coupler and plug plus three male plugs
• Includes: 1 female coupler, 1 female plug, 3 male plugs. Air inlet: 1/4" NPT
• Steel construction
• 1/4" NPT Fittings rotate to eliminate twisted hoses

i guess it depends on your needs. as far as quality goes i have noticed after closely hooking parts up there was some air leaking but not to the point of impacting inflating. now using the attachments for perhaps impact tools or prolonged use like spray painting, you might run into some weakness. don't konw if they are woth trying to "save a little" money.