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Inland 1/4 Inch Diamond Grinding Head

Inland 1/4 Inch Diamond Grinding Head

SKU: 40298

Regular price
Price: $25.99
Regular price
List Price:
Sale price
Price: $25.99
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If a product doesn't have a Free Shipping label, then shipping will be charged at checkout. A handling charge of $5 to $15, depending on the products and the amount of the order, is included.

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We do not ship internationally.

Order Confirmation

As soon as you place your order, you will receive an order confirmation email. This means that we have received your order in our system and pre-authorized your credit card for the purchase. When we receive your order, we reach out to our suppliers to confirm that it is available for shipment within the specified time frame.

If your item is on back-order or unavailable, we will reach out to you via email or phone and void the pre-authorization if you so desire. If your item(s) are available for shipment, we will process the charges and submit the order for shipment.

Order Shipment

If your order is in stock and we process the charges to your credit card, it will ship within the following time frame according to brand, from the date of your order:

Lightning Lap: 1-2 business days
Crystalite: 2-5 business days
Gemini: 5-15 business days
Covington Engineering: 1-5 business days
CabKing, Hi-Tech Diamond, Inland and Tumble-Bee: 1-5 business days

Please keep in mind that processing times may be a little longer during holiday periods. Shipments can also be delayed due to supply-chain issues with our manufacturers. We will inform you if there is any significant delay expected.

We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at


Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrive damaged, please send photos to and we will process an insurance claim on your behalf.

Inland 1/4 Inch Diamond Grinding Head

Inland Diamond Grinding Heads are recognized worldwide as the benchmark for quality and value. These 1/4″ (6 mm) diamond grinding heads provide faster grinding, more grinding surface and more usable diamond than the competition. They are available in a wide range of grits and can be used wet or dry to grind and shape a wide range of products for hobby and home projects.

Because Inland plates their own diamond products, they can offer the absolute best drums. The diamond coating on your Inland diamond grinding head is guaranteed to never peel from the drum, or inland will replace it free of charge for the life of the diamonds.

Key features

  • Use for drilling holes, grinding and shaping.
  • Can be stacked on a larger 3/4" or 1" grinding head.
  • More usable diamond makes them longer lasting.
  • The larger diameter affords faster grinding and more grinding surface.
  • Brass cores are manufactured on Swiss precision machinery for consistent and accurate tolerances.
  • All Inland diamond grinding heads are measured for trueness before any diamond is applied. This insures that every drum will spin properly on the motor shaft.
  • Use wet for shaping all types of stone, glass, tile, and other mineral based materials for home and hobby projects.
  • Use dry to sand, shape, and finish a variety of plastics and woods for home and hobby projects.
  • These bits fit all American and German-made glass grinders and some Chinese models as well.


  • Fits 0.312" (7.92 mm) arbor
  • TIR <.0025" (.0635 mm)
  • CDA 360 brass cores
  • 0.5" (12.7 mm) high diamond surface
  • Also known as WB-8