Tie Down Complete 12″ Hydraulic Drum Brake Installation KitThe Tie Down Complete Drum Brake Installation Kit comes with everything you need to replace a hydraulic drum brake system on your boat trailer.Features:Drum brake assemblies have corrosion resistant components with GalvX finish.For use with 1-3/4″ x 1-1/4″ tapered spindles6 Stud with 6 on 5.5 bolt patternHydraulic brake actuator features Drop n Go Auto Latch CouplerKit Includes:Model 660 disc brake actuatorBrake lines for a single axle trailerLeft and right 10″ drum brake assembliesTwo Pre-assembled and pre-greased 10″ drum hubs