Features 1、 1. The product is used for fusion splicing of communication products such as optical cable joint boxes, optical cable terminal boxes, optical cable transfer boxes, and optical cable junction boxes. 2、 2. The total length of the heat shrinkable tube is about 60mm. 3、 3. The optical fiber splice protection element is composed of: the outer diameter of the heat shrinkable tube (outer tube) is about 3.4mm, the outer diameter of the hot melt tube (inner tube) is about 2.25mm, the diameter of the stainless steel needle is about 1.2mm, and the length is about 55mm. 4、 4. Included 100pcs/pack of ptical fiber heat shrinkable tubes. 5、 5. Increase the mechanical strength of the connecting part. 6、 Specification Outer tube diameter: 3.4mm Outer diameter of inner tube: 2.25mm Stainless steel needle diameter: 1.2mm Stainless steel needle length: 55mm Package included: Optical fiber heat shrinkable tube*100Pcs Package List