Deli Four-Blade Serrated Eccentric Drill Bit for Tile Drilling High Hardness Dry Wear-Resistant 6+6+8+10mm with Storage Box

• When position 1 contacts cutting surface, side blade cuts
• When position 2 contacts cutting surface, front blade cuts
• When position 3 contacts cutting surface, side blade cuts

Staggered distribution of teeth 1 and 2 for layered chip removal, faster drilling

3. Cross Independent Blades

Truly unbreakable blades and drill heads

Cross independent blades reduce vibration during heavy drilling

Lower probability of blade breakage

High stability

New four-blade design with integrated blade and drill head

Each blade operates independently; damage to one blade does not affect the entire drill bit

Improved stability and durability compared to older four-blade models

4. Sharp Drill Tip

Precise positioning and fast drilling

High concentricity

One-piece molding for high efficiency and reliability

Enlarged and thickened drill head for durability and resistance to wear

Larger contact area during drilling for faster and more wear-resistant operation

5. Head Chip Removal Groove

Four large chip removal grooves at the head for combined chip removal and heat dissipation

Increased heat dissipation area and smooth chip removal

Enables true dry drilling with fast heat dissipation

Groove design tightly integrates with blades and shaft for efficient chip removal during drilling

Prevents chip accumulation and overheating

6. Alloy Drill Head with Titanium Coating

Drill head forged from high-hardness tungsten carbide alloy

Titanium coating enhances wear resistance and extends service life

7. Widened Chip Removal Groove

Alternating blade edges create special cutting trajectories

Enhances chip removal volume during high-speed operation

8. Full Ceramic Tile Specialist

Suitable for dry drilling multiple holes

Easily penetrates thick ceramic tiles

Suitable for drilling ceramic tiles, full ceramic tiles, marble, granite, concrete, brick walls, wood, plastic, and glass

deli drill bits feature advanced serrated and cross independent blade designs, high-hardness alloy heads with titanium coating, and optimized chip removal grooves for efficient, fast, and durable dry drilling across a wide range of materials including ceramics, stone, concrete, wood, and glass.