ShrinKit 321 Universal Heatshrink Tubing Kit ShrinKit 321 is a family of five heat shrink tubing assortments in a handy assembly kit. The range consists of ShrinKit 321 Universal, ShrinKit 321 Universal Basic, ShrinKit 321 Basic, ShrinKit 321-A (a dual wall tubing) and ShrinKit 321-A Basic. With their shrink ratio of 3:1, these products replace many differently sized tubing solutions by fitting almost any heat shrink requirements. Choosing the required product is simple as the tubings are identified by size, length and content printed on every compartment of the assortment boxes. Features and Benefits • Reusable kit • Wide range of sizes, colours and lengths • Insulating • Bend protection • Self-extinguishing (except for transparent) • Operating temperature: -55 °C to +135 °C Product Application Information • Electronics industry • Electrical installation