While all taps may look similar, there are significant differences in the size and shape of the cartridge. Most cartridges are made of ceramic or metal and come in various shapes and sizes. The size and type of tap cartridge you need will depend on the make and model of the bathroom or kitchen tap. If you’re unsure which tap cartridge you need, it’s always best to consult a professional before making a purchase.

Below are the most common ceramic disc cartridge sizes:

• 25mm, 35mm, and 40mm
• A single lever or joystick operates all cartridges.