Specifications: Material: Silicone rubber; Length: 3.3 inches (1 m); Diameter: 1.4 inches (35 mm) (Applicable rod); Ratio: 1:2; Minimum Shrink Temperature: + 144°F (60°C); Full Recovery Temperature: + 2115°F (105°C); Operating Temperature: -55°C to + 105°C); Package Includes: 1 x Non-slip heat rod shrink tube. Non-slip, waterproof and insulating properties and heat shrink tubing These heat shrink rods are mainly popular for paddle handles, fishing rods, sports equipment, fitness equipment, daily necessities, kitchen appliances, and many other sizes to choose and use for: Rubber Grip Product Size Instructions: Rubber Grip Product Inner Diameter Size: The inner diameter is a cylindrical rubber grip. When selecting the product size, compare the inner diameter of the rubber grip to the outer diameter of the object you are using, and make sure that it can pass through the rubber grip. When using this product, we recommend using a heat gun for ease of use. Cautions for reference when using the following methods: 1. Please be aware that if exposed to direct fire such as a lighter, stove, etc., it may become burnt due to its strength and burn. 2. Please note that if you do not have temperature control such as dryers, it may wrinkle or melt or deteriorate. If the dryer is still low power, it may not shrink enoughly. 3. It may be finished with boiling water, but it is necessary to boil enough to prevent it from shrinking enoughly. Easy and convenient to use with a heat gun for power and ease of use.