You are buying 1 (ONE) NEW 2" DIAMETER by 12" LONG TUBE of GREEN FLUORESCENT EXTRUDED ACRYLIC. (Two inch x Twelve inch). This tube has a 1/8" thick wall which provides an outside diameter (OD) of 2" and an inside diameter (ID) of 1 3/4". As you can see from the picture of the tube on the black grid, these tubes are translucent. The color of the tubes might vary depending on the back round color and light conditions due to being translucent. You are buying and will receive ONE 2" OD x 12" long fluorescent GREEN tube. 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. Please allow a tolerance of +/- 1/16" on all cuts.