CRL 3-1/2" Metal Tube Drill Bit - 3.5in Hole Saw for Metal Tubing

• One-piece construction for increased rigidity and long-lasting durability
• The trusted "Old Reliable" method for drilling tempered and annealed glass

CRL Metal Tube Drills (SKU: STD312) are engineered for use with the CRL Tripod Drill or similar drill machines. Designed to cut glass by rotational abrasion, these metal tube drills pair with an abrasive grain such as CRL Silicon Carbide Grain and a coolant or water to form a slurry retained by a CRL Rubber Base Drilling Ring. The steady, even rotation produces clean holes with minimal chipping or breakage, making these an economical choice for glass drilling, glass fabrication, and glass hole-making applications. The 1/4" (6.4 mm) diameter shank fits most bench or tripod drill machines.

Key benefits:

• Durable one-piece metal construction — ideal for repeated glass drilling tasks
• Compatible with silicon carbide abrasives and CRL rubber base drilling rings
• 1/4" (6.4 mm) shank fits most drill machines, including tripod drills

Safety & usage notes:

• Always wear proper safety gear, including eye protection.
• Perform work on a flat, horizontal surface.
• Use a Ground Fault Circuit Interrupter (GFCI) when operating electric tools with water or coolant.

Failure to follow these precautions can result in operator injury.


Call CRL Customer Service or add SKU STD312 to your cart to order metal tube drills for glass drilling today.