You won't find Higher Quality Marine Parts We Only Choose The Best Materials Because The Repair Should Only Be Done Once. All End Caps/Glands are made from High Quality Aircraft Grade Aluminum Produced On Precision Computerized CNC Machines All Aluminum Parts Are Hard Anodized Using A Military Grade Type 3 Hard Coat (The Same Coating Used On Military Style Weapons) & Fitted With Viton & Or High Grade Urethane Seals Depending On The Applications Pressure / Sealing Requirements. We always chose the best quality methods and materials when producing anything aftermarket. The True American Way Is Quality Over Quantity. We produced these products because of the large volume of Marine Hydraulic Units we Rebuild and Remanufacture from all over the Country & World we are now offering them to the public at fair market price despite the very high cost of having quality parts manufactured in this day in age. All Of Our Products are Assembled In The USA and mostly sourced domestically whenever possible keeping the jobs here at home. We offer A 2 Year Warranty On All Of Our Products and Services 8M0055006 8M0090335 8M0055011 8M0090335