Replacement Shower Door Hooks. Supplied as a pair of 2 hooks. These high-quality hooks feature a spring-loaded mechanism fitted to the bottom for ease of use. They are suitable for a variety of showers, including Manhattan and MK1 Trevi Boost models. Matching upper rollers are also available separately. The required hole diameter in the glass is 15mm, and the distance from the edge of the glass to the center of the fixing hole is 23mm. Weight: 0.0440924524 Pounds. Manufacturer: Shower Part.