You are buying 1 (ONE) NEW 2" DIAMETER by A NOMINAL 18" LONG TUBE of CLEAR FROSTED EXTRUDED ACRYLIC. (Actual dimensions are Two inch outside diameter by 17 7/8" inch long) I CUSTOM CUT THIS FROM A NEW 6 FOOT LONG LENGTH OF TUBE. THE SAW BLADE IS 1/8" THICK. THEREFORE 1/8" OF MATERIAL IS LOST DURING THE CUTTING PROCESS. These tubes have a 1/8" thick wall which provides an outside diameter (OD) of 2" and an inside diameter (ID) of 1 3/4". PLEASE SEE ALL PICTURES FOR OPACITY DESCRIPTION. Picture # 3 is a wrench being held about the horizontal center of the tube. Picture # 4 is the wrench being held right against the tube wall. As you can see the closer to the tube wall you get the object inside becomes more visible. You are buying and will receive ONE 2" x 18" (17 7/8") FROSTED tube. To assure that you get the finest quality, the protective sleeve is kept in place on the tube 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 length tolerance of +/- 1/16" on all pieces and an ID/OD width tolerance of 0.020".