Each box of Tamper Evident Tape contains two rolls of tape. Each roll of tape is cut into 3″ lengths. Assuming that the you use two pieces of tape to attach the test results (one piece of tape on each side or on top and bottom of the test result), and that you attach a test result to each of the three copies of the Alcohol Test form, one box of tape will yield enough tape to attach results to approximately 72 Alcohol Test Forms.