3-1/2" Standard Plated Diamond Drill

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CRL EDD312 3-1/2" Standard Plated Diamond Drill

Item #: EDD312 by CR Laurence

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In Stock $302.84 /each

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  • Our Most Popular Diamond Drill
  • Available in Sizes from 1/8" to 6" (3.2 to 152.4 mm)
  • 3/8" (9 mm) Shanks
  • Durable and Cost-Efficient
  • For Tripod and Cup Style Type Drilling Machines
  • Smooth Continuous Rim

Recommended RPM

700 - 900

Drill Diameter

3-1/2" (89 mm)


3-1/2 Inches

Shank Diameter




Shank Type

Reduced Round

Drill Bit Material

Standard Plated Diamond

CRL EDD Series Standard Plated Diamond Drills were designed for a cost-effective method of drilling, and are our most popular and economically priced drill. The sturdy solid steel construction allows quick hole drilling with clean break-outs. The generous 3/8" (9 mm) diameter shank allows for a sure fit into any drill machine. Although diamond plated, this drill may be sharpened one time after it is worn out with a CRL Sharpening Stone to expose some of the remaining diamonds to extend its work life.
Always use with a the proper mixture of CRL Diamond Tool Coolant and water for best results.
Product Warning:
Always wear the proper safety gear including gloves and eye protection when drilling glass. Work should be performed on a flat, horizontal surface. A Ground Fault Circuit Interrupter must be used when using any type of electric tool in conjunction with water or coolant. Failure to follow any of these precautions can result in operator injury.

Most shipping weights are approximate and have not been verified. If the exact weight is needed in order to determine shipping costs, and shipping costs are required in order for you to complete your order, please request this prior to submitting your order by contacting CRL Customer Service. Product images shown are of the actual product or a close representation. Colors can vary depending on your computer's video card and on how your monitor's color is adjusted.