Box of 100 Schmetz Industrial Sewing Machine Needles. This needle is for avoiding specific sewing problems and for avoiding thermal damage and needle smearing. Canu: 38:00 3 Nm: 110/044 System: UY 128 GAS BLUK UY 128 TAS 1280 BLUK. This needle works on many machines including Union Special machines. BLUKOLD needle with Teflon coating. This needle coating prevents or greatly reduces the adhesion of melted residues. The use of the BLUKOLD needle does not reduce the needle temperature which is caused by excessive sewing speeds. Schmetz Blukold needles - these needles have a roughened phosphorated surface with a Teflon coating. The needle remains clean for longer periods of time than with a standard chromium plated needle.