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Hole Sawsflintronic✓ In stock

Flintronic 20mm Diamond Hole Saw with Pilot Center Drill Bit, Diamond Core Hole Cutter, Suitable for Glass, Tile, Porcelain, Ceramic, Marble Cutting

$10.55
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About this item
  • 【HIGH-QUALITY MATERIAL】Drilling diameter: 20mm, length: 66.5mm, with 10mm round shank. Selected high-quality alloy materials and brazing technology can enhance the product's high temperature resistance and anti-friction performance. Diamond particles are tightly integrated with core steel, making cutting easier. The knife body is made of high-quality core steel to effectively prevent deformation.
  • 【DRILLING EFFECT】The diamond surface coating is treated with a sintering process, which can effectively reduce resistance, friction and heat. When in use, keep the hole opener vertical, remove the drill bit after drilling the circular groove and continue. It can be cooled with water to ensure its performance and service life.
  • 【PRECISE HOLE OPENING】The center guide drill bit has a positioning auxiliary function. While maintaining high concentricity, it can easily lock the hole center to prevent the drill bit from deviating. It is conducive to uniform force and reduces vibration during drilling. It can drill precise, round, clean and smooth holes, presenting a perfect hole opening effect and improving work quality.
  • 【CHIP REMOVAL DESIGN】Flintronic Diamond Hole Saws adopts U-shaped groove design, which cuts quickly. There are chip removal holes on the side, which can effectively and quickly clean the chips. It also facilitates the entry of cooling water, effectively extending the service life of the hole saw.
  • 【WIDELY APPLICABLE】Flintronic diamond hole saw is suitable for a variety of hard materials, including porcelain, ceramic, granite, marble, masonry, concrete, glass, etc. Both dry and wet drilling are available to meet the needs of professional construction and DIY.
Product description

Flintronic Diamond Hole Saws Selected alloys, fast, accurate and stable hole opening! Brazed and strengthened, easy cutting without deformation! Applicable in multiple scenarios, accurate and durable choice! Specifications: Size: 12*3.2*3.2cm Weight: 70g Color: as shown in the picture Material: Alloy Packing list: 1 *20mm alloy drill bit Precautions: 1. Regardless of the hard material you are drilling, adding water can help lubricate and cool the drill bit, effectively extending the service life of the hole opener and reducing the frequency of replacement. 2. Be sure to wear protective glasses and gloves during operation, keep the work area well lit, the desktop stable, and complete each drilling operation safely and efficiently. 3. Due to different display colors, there may be a certain color difference. Since the product is manually measured, there may be a certain error. If you have any questions, please feel free to leave a message and we will provide you with a satisfactory solution.

Product details
Brand
flintronic
Manufacturer
XJYEU
Material
Alloy Steel
Colour
20mm
Part number
D1-4994439

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
Excellent
4.5 average rating
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S
Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 12 of 10 reviews

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Flintronic 20mm Diamond Hole Saw with Pilot Center Drill Bit, Diamond Core Hole Cutter, Suitable for Glass, Tile, Porcelain, Ceramic, Marble Cutting | Bigamart