Inner rubber layer：Neoprene synthetic rubber, suitable for hydraulic oil that can be degraded
Reinforcement layer：two layers of steel wire braiding (1/4" ‒5/16"), pulse ≥500,000 times, four layers of steel wire winding (3/8"‒1 1/4"), pulse ≥1 million times, six layers Wire winding (1 1/2"‒2"), pulse ≥ 1 million times
