Based on this product's specifications, here are some alternatives and similar models
Diamond Hole Saw Set Dedra DED1592SZ07 — 10 pieces: 6, 8, 10, 12, 20, 28, 35, 40, 45, 68 mm
Summary description:
Diamond hole saw set Dedra DED1592SZ07 contains ten diamond-tipped hole saws in sizes 6, 8, 10, 12, 20, 28, 35, 40, 45 and 68 mm. Designed for drilling precise circular holes in hard materials such as ceramic, porcelain, tile and stone. Suitable for use with drills and drill stands; useful for plumbing, electrical installations, tile work and renovations.