Heat Shrink Cable Boots & End Caps are products used to protect cable and wire connections against damage. They are usually made of a flexible plastic material that shrinks when heated, allowing it to form a tight seal, often referred to as a "shrink fit". Heat Shrink Cable Boots & End Caps come in a variety of sizes, colors and materials to suit different desired applications, and are designed to be slipped onto cables before soldering or connecting them in order to prevent damage to the wires while they are being manipulated or to prevent sparks or splashes from flying. Heat Shrink Cable Boots & End Caps provide strain relief and extra support at the point of joining, ensuring that the end of the cable is flat and uniform, with no gaps between the wires. They also protect against environmental factors such as water, dust, and extreme temperatures.