Air Compressor Hose & Tube Guide - What Size? Air Tube ...
2019-1-17 · Different manufacturers offer air hose with varying wall thickness. Therefore, one 3/8″ hose might be just under 1″ in outer diameter, another might be a 1 1/4″ outer diameter, yet in both cases the I.D. will still be 3/8″, identifying this one as a 3/8″ hose.
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