There are always good reasons why it's difficult to maintain your trailer's brake system. Maybe it was a long winter and your trailer hasnt seen as much use since summer. Or, life happens and its just not possible to get it out and going. The good news is that calipers double coating will make it last longer stay in good working order. This varies by circumstances like non-use, plus there's usual wear and tear, how you drive, and conditions like climate and humidity of where the trailer is kept and if used in Saltwater applications. Whatever the reason to replace your hydraulic caliper, start with SkipperMate Marine for all your restoration needs. The Universal Hydraulic Caliper Replacement parts are zinc coated and available with supplies such as pads and mounting bolts and fit inch to 5/8 inch thick rotors. You can conveniently order the Universal Hydraulic Caliper Replacement for Trigg 200/Trojan AU/AL-KO style brakes online at SkipperMate Marine. If you have any questions, feel free to contact us.