Protect your fiber optic splices with these precision-engineered fusion sleeves. Featuring a dual-layer construction with EVA inner tubing and PE heat shrink outer layer, these 2.5mm x 60mm sleeves deliver reliable protection for single-fiber applications. The transparent design enables visual inspection of your splice before heat shrinkage, while the integrated steel rod ensures proper alignment and prevents burring. Built to withstand thermal shock, environmental stress, and coastal corrosion, they work seamlessly with standard fusion splicer ovens for efficient installation. This 400-piece pack accommodates fibers up to 1.4mm in diameter, making it an essential supply for professional fiber optic technicians and network installers.