This is 11/32 Outside Diameter brass tube very nice tube BRAND NEW with a wall thickness of 0.014" (0.36mm) The great thing about this tubing that the next size up 3/8 fits the 11/32 inside it and this is the same for all the tubing by K & S.

All the tubing the size below fits inside each other.

This is for a 12" length posted same day as purchase next day delivery please check my feedback.