Product Name:Aquarium corrugated hose Color: Black working temperature:-40℃~125℃ Joint material: Rubber Hose material: PA (Flame retardant material) Size: inner diameter 20mm/25mm/32mm/40mm50mm. Length: 0.3m 0.5m 1m 1.5m Arbitrary bending Easy installation High quality raw materials Thickened joint There are soft rubber heads at both ends Excellent sealing performance Bending resistance Non toxic and tasteless