Heat Shrink 2:1 Tubing. Heat Shrink 3:1 Tubing. Heat Shrink 4:1 Tubing. Shape: Ø1 mm-6 mm is round, Ø7 mm and above are flat. Features: 3:1 high shrink ratio, insulation sealed and waterproof. Shape: Ø1.6-9.5 mm round, Ø12.7mm and above are flat.
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