Diamond hole saw set Dedra DED1592SZ04 — sizes 6, 8, 20, 35, 50, 68 mm with guide

Diamond hole saw set Dedra DED1592SZ04 contains six coronet cutters in sizes 6, 8, 20, 35, 50 and 68 mm and a guide for accurate positioning. The set is designed for cutting clean circular openings in hard and brittle materials such as ceramic tiles, porcelain and similar surfaces where diamond abrasives are required. The guide helps keep the hole saws steady during start-up and reduces the chance of slipping on glazed or polished finishes.

Advantages

The diamond cutting edges provide consistent cutting performance and longer life compared with conventional HSS or carbide hole saws on brittle materials. Multiple sizes in one set allow flexibility for different hole diameters without changing tools. The included guide improves accuracy and reduces chipping at the hole edges. The coronet design enables effective dust and debris removal while drilling, supporting smoother progress through hard surfaces.

Suitable for

• Drilling holes for plumbing fixtures and pipes in ceramic and porcelain tiles
• Creating openings for electrical boxes or light fittings in tiled walls
• Installing sinks, taps and bathroom accessories requiring precise circular cuts
• Cutting sample or inspection holes in hard brittle construction materials

Key specifications

• Cutting diameters: 6 mm, 8 mm, 20 mm, 35 mm, 50 mm, 68 mm
• Cutting edge: diamond grit segmented coronet design
• Includes positioning guide for stable drilling
• Application materials: ceramic tiles, porcelain, glazed surfaces and similar brittle materials
• Tool compatibility: standard drill chuck mounting (use appropriate arbor or adapter if required)

How to use

Mark the drilling center on the workpiece and fit the required diameter coronet cutter to the drill, securing the guide in place if applicable. Start drilling at low speed, applying light steady pressure and keeping the drill perpendicular to the surface. Use water or a cooling lubricant to reduce heat buildup and prolong the life of the diamond segments. Increase speed moderately once the cutter has established a stable groove, and clear debris regularly. After completing the hole, remove the cutter and clean the edges to check for any minor chipping.

Usage recommendations

For best results, use a cordless or corded drill with variable speed control, keep the cutting area continuously cooled with water, and avoid excessive pressure that can cause cracking. Wear eye protection and a dust mask when drilling; test on a spare tile to confirm speed and pressure settings before working on visible surfaces.