I was interested in replacing the hydraulic hose in my car since it was getting old; I did not want to keep a hose that could work less efficiently or could break down. I purchased a manual in order to learn how to replace the hydraulic hose and fittings. I read the manual as I waited for the delivery that would contain the items needed to replace my hydraulic hose. When the items came, I successfully replaced the hydraulic hose. My car works fine.