3M ScotchCode Wire Marker Tape Refill Roll SDR 20-29General Information Brand 3M Dispenser Marker Type Tape Roll Refill Marker ID Style Pre printed Marker Type Dispenser Printed Text Type Numbers 20 29 Product Type Identification Country Of Origin United States Lead Time 2 days California Residents Proposition 65 Warning Dimensions and Specifications Marker Size Cut Length to Suit Maximum Insulation Outer Diameter (Metric) 3. 7 mm Maximum Insulation Outside Diameter 0. 145 in Maximum Operating