Properties of TLFX DS heat shrink markers: Shrink ratio of 2:1 Available in standard lengths of 50 mm, 25 mm, and 16 mm, with other lengths available upon request Available in white and yellow Suitable for wire diameters ranging from 38.1 mm to 1.2 mm Halogen-free Low smoke density, density, and toxicity High oxygen index (38%) Compliant with the highest fire safety standards for railway applications Conveniently packaged Easy to design with Tagprint Pro Application: TLFX DS are certified heat shrink markers with a 2:1 shrink ratio, designed for use in railway rolling stock. It is recommended to use premium HellermannTyton thermal transfer printers and TTDTHOUT color ribbons to ensure the longevity of the markers. Printers: TrakMark DS, TT4000+, and TT430 Color ribbons: TTDTHOUT Accessories for TrakMark DS and TT4000+: Perforator (P4000), Cutting Blade (S4000) Accessories for TT430: Cutting Blade (S430) Software: Tagprint Pro