This kit includes genuine Tetra replacement parts for the TetraTec Deep Water Aquarium Air Pump (DW 96-2). These parts are also compatible with the Supra 4 Air Pump. Genuine Tetra replacement parts All replacement parts for Deep Water Air Pump Compatible with Supra 4 Air Pump Repair Kit Includes: 1 Air Filter Repair Kit Wrench 4 Diaphragm Assemblies (with screws washers and nuts) 4 Rubber Armature Hinges 4 Rubber Washers 8 Rubber Retaining Plugs 8 Silaflex II Valve Flappers.