Irwin IR50516 Glass Tile Drill Bit 1/4 Inch Spear Point

Product Description

The IRWIN IR50516 is a spear-point glass and tile drill bit designed for controlled penetration through hard, brittle surfaces including ceramic tile, glass, and similar materials. The cutting tip is tungsten carbide tipped, providing the hardness needed to score and drill without shattering the workpiece. The 1/4-inch diameter makes it a standard size for fixture anchors, glass pilot holes, and tile penetrations encountered in plumbing, electrical, and general trade work. This bit is sold individually and is packaged on a retail card for point-of-sale or job-site storage.

This bit is suited for residential and light commercial applications where a clean, controlled entry hole is required in ceramic tile, porcelain, glass, or similar hard surfaces. Typical use cases include pre-drilling anchor points behind tile, penetrating glass panels, and creating pass-through holes for pipe or conduit in tiled surfaces. It is appropriate for plumbers, electricians, and general contractors working in finished spaces where surface integrity must be maintained.

Key Features

• Spear-point geometry designed for starting on hard, smooth surfaces without wandering
• Tungsten carbide tipped cutting edge for drilling glass, ceramic, and tile
• 1/4-inch drill diameter for standard anchor and pass-through applications
• Carded packaging for easy storage and identification on the job site

Compatibility

Designed for use in standard 1/4-inch drill chucks; suitable for drilling glass, ceramic tile, porcelain, and similar hard, brittle materials.

Installation Notes

A licensed tradesperson or experienced installer should use a variable-speed drill at low RPM with light, steady pressure to avoid cracking tile or glass. A water or cutting fluid drip at the drill point helps dissipate heat and extend bit life. Never use hammer or percussion mode when drilling glass or tile, as impact force will shatter the workpiece. Secure the workpiece firmly before drilling to prevent movement.