This economical disc rear brake kit with internal handbrake shoes which is designed specifically for Ford 9-inch differential from Aeroflow Performance. It is simple to install, with detailed instructions and provides big stopping power compared to original factory drum brakes. Aftermarket disc brakes are superior to original drums and this kit comes with large 12.19" diameter, 3/4 thick vented rotors that are drilled and slotted with three bolt circle patterns included (5 x 4.50/4.75/5.00). This kit features a hidden internal handbrake system providing a clean installation with superior static holding power for parking. Mounting plate assemblies to fit Ford 9-inch axle housings with New Big Ford Bearing (2.50 axle offset). The brake calipers are an off road use low profile forged billet 4 piston caliper with bleed nipples on top and bottom of the caliper. Included are high friction brake pads to provide optimized and balanced braking for all types of vehicles.