Based on this product's specifications, here are some alternatives and similar models
Hole Saw KWB 500306 6mm for Ceramic Granite Marble
Summary description:
The KWB 500306 hole saw is designed for drilling through ceramic, granite, marble, and other hard materials. With a diameter of 6mm, it is suitable for precision work and offers durability and efficiency in cutting. Ideal for both professional and DIY projects.