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