You are buying 2 (TWO) NEW 1/2" DIAMETER by 12" LONG TUBES of CLEAR EXTRUDED ACRYLIC. (One Half inch diameter by Twelve inch long) These tubes have a 1/16" thick wall which provides an outside diameter (OD) of 1/2" and an inside diameter (ID) of 3/8". You are buying and will receive TWO 1/2" OD x 3/8" ID x 12" 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. Please allow a tolerance of +/- 1/32" on all pieces.