1/4 inch for the air supply end, 1/8 inch for the airbrush connection. The braiding reinforces the hose against the constant flexing and repositioning that happens during extended sessions, eliminating the pressure drops that occur when cheaper hoses collapse mid-stroke.

Flexible enough to move freely without fighting your hand, yet substantial enough to stay where you position it rather than springing back unpredictably. The dedicated Paasche fittings ensure secure connections without adapters, the 1/8 inch coupling threads directly onto Paasche airbrush bodies for leak-free operation. Note that these proprietary fittings won't work with other airbrush brands; Paasche engineers them specifically for their own equipment tolerances. Replace worn hoses before deterioration affects spray consistency, or keep a spare on hand to swap out quickly when working against deadlines.