Prier Service Parts Kit for Model No. 378/578 Series Wall Hydrants includes all the essential components you need for maintenance and repair. This comprehensive kit features a bonnet, bonnet O-ring, stem packing, brass packing washer, O-ring, backflow washer, bibb retainer, seat washer, and screw, ensuring a fit and reliable performance. It replaces pack model numbers 630-7964 and 630-7754 and is also compatible with other generations of Mansfield wall hydrants. Made from high-quality rubber, brass, and plastic materials, this kit durability and a professional finish in black, white, and brass colors. Model Number: 630-7755