CRL AG Series 1-3/8 in Diamond Drill Bit for Glass & Tile

• Unique aggressive sawtooth profile for faster glass cutting
• Our most durable style of plated diamond drill for glass
• Available diameters: 1/8" to 4-1/2"

The special sawtooth design of CRL Amazing Glazing Plated Diamond Drills (SKU: AG138) reduces contact area for improved grinding action and better coolant penetration—ideal diamond drill bits for glass glazing and edge work. Machined from solid steel, these plated diamond drills perform well in portable tripod and cup-style drilling machines. For optimal results, use with DTC80 Diamond Tool Coolant and submerge the bit in a retaining ring. When fully worn, these drills can be sharpened one time with a CRL Sharpening Stone to expose remaining diamonds and extend service life.


Safety Note: Always wear proper safety gear, including eye protection, when drilling glass. Work on a flat, horizontal surface. Use a Cat. No. GF1 Ground Fault Circuit Interrupt Device when operating electric tools with water or coolant to reduce shock risk. Failure to follow these precautions can result in operator injury.


Product Warning

NEVER perform freehand drilling. Hand drills require a stabilization base such as our GDB1 or GDB2 Glass Drilling Bases. Using these drills in any manner other than specified may damage the bit and void the warranty.