Triple-layer, flexible, spark-proof linear hose made of plasticized Polyamide 12 PHL, stabilized against light and heat. Internally reinforced with a tightly woven PBT braid.Externally, with an additional layer of anti-abrasive 85 shA polyurethane, self-extinguishing to UL94 V0 standards, suitable for improving protection against sparks and welding spatter.The anti-abrasive outer sheath (64 shore D hardness) can be easily removed with a special tool because it is not glued, facilitating assembly operations.Hose suitable for use with quick-connect fittings. Black color, 100 meter rolls