The Coro Glass Drill Bit 12mm is engineered specifically for drilling holes in brittle substrates such as glass, glazed tiles, porcelain, ceramic, and mirrors — materials that are prone to chipping and cracking when drilled with general‑purpose bits. In the Kenyan construction and finishing sector, clean and precise hole drilling is essential for installing fittings like taps, shower heads, shelving brackets, cable entry points, and decorative hardware without compromising surface integrity.

At its core, the Coro 12mm Glass Drill Bit features industrial‑grade diamond abrasive bonded to a hardened steel body. Diamond is the most effective cutting medium for brittle and high‑density materials due to its unmatched hardness and wear resistance. The cutting segments are strategically arranged to initiate drilling with minimal radial pressure, which significantly reduces the risk of cracking along the drilling path — a common issue when using conventional carbide or HSS bits on glass and tile surfaces.

The bit’s flute geometry and cutting profile are optimized to facilitate efficient removal of debris and to maintain the bit’s stability during the drilling process. Reduced vibration and a balanced cutting action enhance control, especially when used with handheld drills or drill stands. This is particularly important in high‑finish environments such as bathroom and kitchen tiling projects where surface perfection is a priority.

For best performance, controlled wet drilling is recommended. The use of water as a coolant during drilling helps in dissipating heat, flushing debris, and minimizing dust, which keeps the work area cleaner and prolongs bit life. When wet drilling is not feasible, slow RPM and steady pressure can achieve acceptable results on thinner or glazed tile surfaces.

The 12mm diameter is a commonly required size for a range of installation tasks in residential and commercial builds across Kenya. Typical applications include drilling holes for plumbing pipes, cable passes, anchor points for fixtures, and decorative hardware where precision is critical.

Ngong Hills Merchants supplies this Coro Glass Drill Bit with quality assurance and documentation support. All tools and accessories are provided with eTIMS‑compliant invoices, which are mandatory for tax deductions and proper documentation for registered businesses in Kenya in 2026. This ensures that your purchase not only performs technically but also aligns with compliance and procurement standards in professional practice.

Whether you are a professional installer, fabricator, or a homeowner undertaking precision drilling, the Coro 12mm Glass Drill Bit delivers reliable, clean, chip‑resistant holes in brittle surfaces that meet structural and aesthetic expectations.

Specifications & Key Features of Coro Glass Drill Bit 12mm

Use Cases & Applications of Coro Glass Drill Bit 12mm

• Drilling 12mm holes for plumbing pipes and cable pass‑throughs in tiled walls and glass partitions.

• Creating anchor points for shelves, brackets, and decorative hardware on ceramic and porcelain surfaces.

• Installing fittings such as taps and shower holders that require precise, chip‑free holes.

• Mirror and glass panel installations in bathrooms, offices, and commercial interiors.

• DIY and professional jobs where surface integrity and finish quality are essential.

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