Diamond Hole Saw Set, 8-Piece 20–68mm M14 Thread

Diamond hole saw set delivers clean, accurate holes in tile, ceramic, porcelain, marble, and stone—ideal for plumbing outlets and fixture installs with less chipping. This 8-piece diamond core drill kit is designed for use with an M14 angle grinder and supports dry or wet cutting depending on your setup. Side ventilation holes help clear dust and debris during high-speed drilling for smoother operation and steadier control on hard, abrasive surfaces.

• Includes 8 sizes (20–68 mm) to match common pipe, faucet, and anchor cutouts.


• Delivers cleaner edges with diamond cutting rims vs. typical carbide or bi-metal hole saws.


• Supports dry/wet cutting to suit jobsite conditions and reduce heat buildup.


• Improves control by starting with a pilot hole to help prevent wandering on smooth tile.


• Stores safely in a compact case to keep bits organized between jobs.

Built for rigid, abrasive materials, this diamond core drill bit kit helps you work faster on renovations, bathroom installs, and kitchen upgrades where accuracy matters. The body openings are designed to clear filings while cutting, helping maintain a consistent bite through porcelain, granite, marble, and dense ceramic. Pair with a compatible M14 angle grinder, mark your center, start with a controlled pilot groove, and let the diamond edge do the work. Grab yours today to keep the right size on hand for every installation.

• Type: Diamond hole saw / core drill bit set


• Material: Diamond


• Max drilling depth: 45 mm / 1.8 in


• Diameters (mm): 20, 25, 32, 35, 40, 50, 60, 68


• Diameters (in): 0.8, 0.98, 1.3, 1.4, 1.6, 1.96, 2.0, 2.7


• Mounting thread: M14 (angle grinder compatible)


• Cutting method: Dry/Wet cutting


• Package: 8-piece set with storage case