You are buying 2 (TWO) NEW 1/2" SQUARE by 12" LONG TUBES of CLEAR EXTRUDED ACRYLIC. (One Half inch outside dimension by Twelve inch long) These tubes have a 1/16" thick wall which provides an outside dimension (OD) of 1/2" and an inside dimension (ID) of 3/8". The picture shows one square tube for representation of our product BUT you are buying and will receive TWO 1/2" OD x 3/8" ID x 12" square tubes. To assure that you get the finest quality, the protective sleeve is kept in place on the rods while being cut to protect the acrylic. All tubes have saw cut edges on both ends. Saw cutting can cause micro chips on the ends of the tube as seen in the pictures. Please allow a tolerance of +/- 1/16" on all piece lengths. PLEASE NOTE Width Tolerance is +/-0.015"