CellPack manufactures the 127125 heat shrink, which is black in colour and provides a shrinkage ratio of 3:1. This flexible tubing, with a diameter of 12 mm that shrinks to 4 mm, is typically used for insulating and protecting wires and cables. The product, known as SB12-4, is suitable for a variety of electrical applications where enhanced protection is necessary. https://elecena.pl/product/28531594/cellpack-127125-heatshrink-black-12mm-4mm-3-1-shrinkage-8m-length 2025-04-24 https://elecena.pl/product/28531594/cellpack-127125-heatshrink-black-12mm-4mm-3-1-shrinkage-8m-length 2026-07-16