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50mm (2") Ultra Thin Wall Hole Bit For Ceramics & Glass

The Calidad 50mm (2") Ultra Thin Wall Hole Saw Bit is engineered to solve the intricate problem of precision drilling in delicate, hard materials without causing damage. This toolset, designed exclusively for wet use, offers a solution for those requiring clean, precise holes in ceramics, optical glass, and sheet glass, doubling the lifespan and speed compared to traditional drilling methods.
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  • Description
  • Applications
  • Use-Cases
  • Tech Specs

Ideal for precision drilling on delicate, hard materials such as ceramics, optical, and sheet glass.

Tile, ceramic, and glass drill bits with ultra-thin walls (1mm) deliver a 2x longer lifespan and faster drilling speed on delicate surfaces. 

The key feature of these drill bits is their innovative electroplated diamond core, which is significantly thinner compared to other core drills available in the market. This slender wall design not only facilitates more precise cuts but also ensures a superior surface finish with minimal chipping. They are perfectly suited for working with a variety of delicate, hard materials, including optical glass, glass tiles, sheet glass, thin glass, and even slender stone slices.

These drill bits are particularly recommended for use with angle grinders, enhancing their versatility and precision. The suggested RPM range for optimal performance is between 3,500 and 4,500. To ensure both cooling and prolonged life of the drill bit, it's essential to use them only with water (Wet Use Only). The high-quality diamonds embedded in these bits enable faster and cleaner drilling, making them ideal for creating clean, precise holes in hard materials.

Disclaimer: This bit is designed for Wet Use Only. Please ensure you do not force the bit down too hard as it may break - let it work with adequate pressure.

Glass Tile

Sheet Glass 

Thin Glass 

Thin Stone Slice

Installation of Large Plumbing Fixtures: Ideal for drilling precise, large openings needed for accommodating showerheads, drainage pipes, and other significant bathroom fixtures in ceramic or glass surfaces, ensuring a snug fit and flawless finish.


Creating Access Points for Electrical and HVAC Systems in Glass: Perfect for establishing clear, large diameter holes in sheet glass required for sophisticated electrical, HVAC systems, or architectural hardware installations, where precision is paramount to maintain the integrity of the material.


Large Optical Component Assembly: Suitable for precision drilling in optical glass, facilitating the assembly of larger optical components where accuracy and a chip-free finish are critical to the functionality and performance of the final product.


Decorative and Functional Elements in Large Stone Slabs: Enables the crafting of clean, precise holes for the installation of decorative or functional elements in larger stone slabs, such as marble or granite, ideal for creating statement pieces or functional designs in luxury installations.

  • Hole Dimension: 50mm (2")

  • Wall Thickness: Ultra-thin 1mm for precision cutting

  • Material: Electroplated diamond core for enhanced durability and efficiency

  • Recommended RPM: 3,500 - 4,500 for optimal performance

  • Usage: Wet use only, essential for cooling and prolonging bit life

  • Compatibility: Recommended for use with angle grinders for increased versatility and precision

  • Drilling Efficiency: Embedded high-strength diamonds for faster, cleaner drilling in hard materials