As far as I am able to ascertain the Dymo tape I am using in my USB Dymo Tape machine is described as "DYMO D1 12MM BLKON WHITE TAPE or DYMO D1 12MM BLACK ON WHITE TAPE 43113. I *assume* that the 43113 is the specific Dymo catalogue or product number for this specific tape. HOWEVER I have notice that some catalogues are also listing the SAME tapes with the product number 45013 and the tape size in feet and inches a then the product number S0720530 and the tape size in metric! Dymo could certain make its product identification more straightforward especially as mistakes could be expensive! Hope the above helps.