Saw Blades
Tile Porcelain Blade
Concrete Blade
Granite/Marble Blade
Carving Mini Blade(30mm-75mm)
Large Blade(350mm-400mm)
Diamond Core Bits
Diamond Drill Bit Kit
5/8-11" Thread
M14 Thread
Hex Shank
Diamond Grinding Wheels
Turbo Row Wheel
Vacuum Brazed Grinding Wheel
Profile wheel
PCD Grinding Wheel
Diamond Polishing Pads
Diamond Polishing Pads for Stone
Diamond Polishing Pads for Concrete
Diamond Hand Polishing Pads 
Other Tools & Accessories
Bathroom renovation often involves drilling, cutting, and finishing extremely hard materials such as ceramic tiles, porcelain tiles, sintered stone, quartz, and natural stone. Choosing the right diamond drill bits and saw blades is critical to avoid chipping, cracking, or costly material waste.
This guide focuses on the most common bathroom renovation scenarios—drain hole drilling, sintered stone vanity edge finishing, and tile & slab cutting—and recommends the right diamond tools and sizes for each application.
Quick Tool Overview (By Application)
- Diamond Drill Bits for Drain Holes
- Diamond Grinding & Polishing for Vanity Tops
- Diamond Saw Blades for Tile & Slab Cutting
1. Diamond Drill Bits for Bathroom Drain Holes
Drain holes are one of the most critical steps in bathroom installation. Incorrect drill bits or excessive speed can easily crack tiles or sintered stone slabs.
Recommended tool: Thin-wall continuous rim diamond core drill bits (wet use preferred).
Common drain hole sizes:
- 32 mm / 35 mm / 38 mm – Standard sink and vanity drain holes
- 45 mm / 50 mm – Floor drains and special fittings
- 65 mm – Larger drainage or pipe access holes
32mm Diamond Core Drill Bit
Thin-wall continuous rim design minimizes chipping when drilling drain holes.
Materials: Ceramic tile, porcelain tile, sintered stone, quartz
Diameter: 32 mm
50mm Diamond Core Drill Bit
Ideal for floor drains and larger plumbing openings. Designed for wet drilling.
Materials: Porcelain, stone, sintered slabs
Diameter: 50 mm
Shop Now2. Diamond Grinding & Polishing for Sintered Stone Vanity Tops
Bathroom vanity tops made of sintered stone or quartz require precise edge grinding and polishing after cutting or drilling.
Recommended tools:
- Diamond grinding wheels for chamfering and shaping
- Resin-bond diamond polishing pads for smooth, glossy edges
Typical grit sequence:
50–100# (rough shaping) → 200–400# (edge refinement) → 800–1500# (polishing) → 3000# (high gloss)
Diamond Grinding Wheel 125mm
Designed for beveling and shaping vanity edges using angle grinders.
Grit: 100#
Diamond Polishing Pad 800#
Produces smooth, professional-quality edges on sintered stone and quartz.
Grit: 800#
3. Diamond Saw Blades for Tile & Slab Cutting
Large-format tiles and sintered slabs require stable, chip-free cutting. Choosing the correct diamond saw blade ensures clean edges and reduced material loss.
Recommended blade types:
- Continuous rim blades – Ceramic & porcelain tiles
- Turbo or segmented blades – Natural stone and granite
180mm Diamond Saw Blade
Ultra-thin design for smooth, accurate tile and slab cutting.
Diameter: 180 mm
Shop Now230mm Diamond Saw Blade
Suitable for thicker tiles and large-format sintered stone slabs.
Diameter: 230 mm
4. How to Drill a Drain Hole Safely (Step-by-Step)
- Mark the drilling position and apply masking tape to reduce surface chipping.
- Secure the tile or slab firmly to prevent vibration.
- Use a diamond core drill bit at low speed with constant water cooling.
- Apply light, even pressure—never force the drill.
- After drilling, smooth the edge using fine-grit polishing pads.
5. Safety & Tool Care Tips
- Always wear safety goggles, gloves, and a dust mask.
- Wet cutting and drilling significantly reduce heat and dust.
- Clean diamond tools after use and store them dry.
- Replace worn tools to maintain cutting quality and safety.
Bathroom Renovation Tool Kits Available
Explore our curated diamond tool kits for bathroom renovation—covering drain hole drilling, edge polishing, and tile cutting.
View Tool Kits