Drill America
✓Hole Saws
Drill America - CTH4250 4-1/4" Carbide Tipped Hole Cutter with 1" Depth of Cut
★★★★★4.6
$973.99
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$102.99
16Pcs M6 Blue Sand Diamond Hole Saw Kit 5–50mm + 6 Masonry Drill Bits 6–12mm, Tungsten Carbide Tile Cutter for Porcelain, Glass, Stone & Concrete, Fits Drills, Rotary Hammers & Angle Grinders
★★★★★
$102.99
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About this item
- 【COMPLETE 16-PIECE COMBO KIT】Includes 10 M6 blue brazed diamond hole saws in sizes 5mm, 6mm, 8mm, 10mm, 12mm, 20mm, 25mm, 35mm and 50mm, plus 6 eccentric pilot drill bits sized 6mm, 6mm, 8mm, 8mm, 10mm, 12mm with 6.35mm hex shanks. This set adds extra small-size cutters and matching drill accessories to handle both tiny precision holes and large-diameter drilling work with one kit.
- 【PREMIUM TUNGSTEN CARBIDE + BLUE SAND LAYER】Crafted from industrial-grade tungsten carbide alloy with a brazed diamond blue sand layer for exceptional hardness and wear resistance. Ideal for drilling into hard and brittle materials such as ceramic tiles, glass, natural stone, and concrete – delivers long service life and high efficiency.
- 【DUAL SHANK DESIGN FOR WIDE COMPATIBILITY】All bits with M6 thread. Hole saws have 6mm round shanks for standard drill chucks; eccentric pilot drills use 6.35mm hex shanks for quick-change systems. Fits electric drills, rotary hammers & angle grinders, creates precise low-error holes for water pipe, wire and light fitting installation.
- 【OPERATING SPEED & COOLING REQUIREMENTS】For optimal performance, maintain a speed of 800-1200 RPM. Excessive speed may cause the diamond layer to detach. Continuous water cooling is mandatory during drilling (especially on tile and glass) to prevent overheating, material cracking, or bit failure.
- 【VERSATILE PROFESSIONAL APPLICATION】Ideal for DIY enthusiasts, tilers, plumbers, electricians, and contractors. Perfect for drilling into ceramic and porcelain tiles, glass mirrors, marble, granite, concrete, and brick. A must-have addition to any workshop or trade toolkit for renovation, installation, and repair projects.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
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 1–2 of 10 reviews
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