This is 1/16 OD Brass Square tube very nice tube BRAND NEW with a wall thickness of 0.014", The great thing about this tubing that the next size up(3/32) fits the 1/16 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.