3M™ FP-301 Heat Shrink Tubing offers an outstanding balance of electrical, physical and chemical properties for a wide variety of applications. This assortment comes with 5 each of the 7 sizes and in a case quantity of 10. 3M™ FP-301 is a heat shrinkable flexible polyolefin tubing that offers an outstanding balance of electrical, physical and chemical properties for a wide variety of industrial and military applications. Rated for 275(deg)F(135(deg)C) continuous operation