feature:Made of high volume glass fiber shell, thick iron red silica gelSmooth surface, tear resistance, not easy to wrinkle and breakSleeve type, good sealingGood flexibility, shock resistance and abrasion resistanceFireproof insulation, electricity resistance, high temperature resistanceRedRated voltage: 7KV-25KVWorking temperature: -75℃-350℃ can be used continuously, instantaneous temperature resistance can reach 1600℃Product performance: fireproof, flame retardant, heat insulation, insulation, anti-aging, anti-splash of molten steel, anti-oilpacking list:1m x fiberglass sleeveSize: buy according to the picture sizehint:1. All high-temperature materials will have a tingling sensation due to special materials (materials are smaller than human pores). Wear gloves when using it. After using the product, it can be washed with water without scratching.2. The size is manually measured, there may be errors, the actual product shall prevail, please understand