# Diamond-Tipped Core Drill Bit AWTools KORONA M14 28 mm

**URL:** https://aio.lv/en/product--awtools-aw47289--11943010
**Data updated:** 2026-03-10 11:48 (EET)
**Category:** Drill Bits
**Manufacturer:** AWTools
**Manufacturer code:** AW47289
**EAN:** 5903678623258
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--awtools-aw47289--11943010

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Diamond-tipped core drill bit AWTools KORONA with M14 thread and 28 mm cutting diameter. Designed for cutting and drilling through hard materials where a diamond edge is required. Suitable for use with compatible rotary tools, grinders or angle drills with M14 mounting for tasks such as making precise holes in ceramic, tile, stone or similar surfaces.

## Long description

Diamond-tipped core drill bit AWTools KORONA M14 28 mm is a rotary tool accessory designed for precision drilling in hard surfaces. The bit features a 28 mm cutting diameter and an M14 mounting thread for secure installation in compatible angle grinders, rotary cutters or drills with M14 spindles. The diamond edge provides cutting performance required for clean holes in ceramic, tile, natural stone and similar dense materials.
Advantages
The diamond-tipped cutting rim ensures improved wear resistance and consistent cutting quality when working with abrasive or brittle surfaces. The M14 threaded shank provides reliable, vibration-minimised mounting in tools that accept this standard. The 28 mm diameter offers a balance between hole size and control, suitable for tasks that require accurate, smooth-edged openings without excessive chipping.
Suitable for
 Drilling holes in ceramic tiles and porcelain
 Creating openings in natural and engineered stone
 Cutting precise apertures for plumbing or electrical fixtures
 Use with angle grinders and rotary tools with M14 thread
Key specifications
 Cutting diameter: 28 mm
 Tip material: diamond-coated cutting rim
 Shank type: M14 threaded mount
 Intended materials: ceramic, tile, stone and similar hard surfaces
How to use
Install the AWTools KORONA core bit into a compatible tool with M14 mounting, ensuring the shank is firmly tightened according to the tool manufacturer's instructions. For best results on tile, stone or ceramic, start at low speed to position the bit, then increase speed moderately while applying steady, even pressure. Use a water coolant or intermittent drilling to reduce heat and prolong diamond life when working on dense or large-area materials. Avoid forcing the bit; let the diamond rim cut progressively to prevent cracking or premature wear.
Usage recommendations
Wear appropriate personal protective equipment including eye protection, gloves and respiratory protection when generating dust. Use a drill guide or template for improved accuracy and maintain steady cooling with water or pauses to extend tool life. Verify that the selected power tool supports M14 accessories and follow all safety instructions from the tool manufacturer.

## FAQ

### How much does the AWTools KORONA M14 28 mm core drill bit cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 119 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All AWTools products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized AWTools service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11943010/67385729_large.webp