# Diamond Core Bit for Porcelain/Gres Silver KORONA 68 mm, model 12258

**URL:** https://aio.lv/en/product--silver-12258--12381318
**Data updated:** 2026-04-26 20:53 (EEST)
**Category:** Power Tools Accessories
**Manufacturer:** Silver
**Manufacturer code:** 12258
**EAN:** 5907589369892
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.99 €
**Prices and availability valid until:** 2026-07-10 23:59
**Price without VAT (21%):** 29.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--silver-12258--12381318

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Diamond core bit Silver KORONA 68 mm (MPN 12258) designed for drilling through gres and porcelain tiles. The segmented diamond edge provides effective cutting of hard ceramic surfaces with water cooling; suitable for electricians, tilers and renovation professionals for creating clean holes for pipes, outlets and fixtures.

## Long description

The Diamond Core Bit for Porcelain/Gres Silver KORONA 68 mm is a segmented diamond cutter designed to drill precise circular holes in hard ceramic surfaces such as porcelain and gres tiles. Optimised for wet drilling, the bit removes material efficiently while minimising chipping and providing a clean edge. It is intended for use with compatible rotary drills and angle grinders equipped for core bits and is suitable for trade professionals who need reliable performance when installing pipes, electrical boxes or fixtures.
Advantages
This core bit features a segmented diamond cutting edge that enhances cutting speed and prolongs life when working on dense ceramic materials. The design supports water cooling to reduce heat buildup and dust, resulting in smoother cutting and lower risk of glazing or thermal damage to the tile. Its 68 mm diameter allows consistent, repeatable hole sizes for standard installations and the robust construction gives stable performance under continuous use.
Suitable for
 Drilling holes in porcelain and gres tiles for plumbing penetrations
 Creating openings for electrical boxes, sockets and conduit in tiled walls
 Renovation and installation work where clean circular holes through hard ceramic are required
 Professional tilers, electricians and installers working with large-format or dense ceramic tiles
When it may not be suitable
This core bit is specifically made for hard ceramic materials like porcelain and gres; it may not perform optimally on soft tiles, natural stone types with variable composition, glass, or metal. Dry drilling is not recommended; without adequate water cooling the bit can overheat, wear prematurely or cause damage to the workpiece.
Key specifications
 Diameter: 68 mm
 Cutting edge: segmented diamond tip designed for hard ceramic
 Recommended cooling: water-assisted (wet drilling)
 Typical use: circular core drilling in porcelain and gres tiles
 Compatible with: drills or core drill adapters that accept this diameter and mounting type
How to use
Mount the core bit securely in a compatible drill or core drilling adapter according to the tool manufacturer’s instructions. Position the bit on the marked drilling point and start at low speed to establish the cut, using water flow to keep the tip cool and to flush out slurry. Apply steady, moderate pressure and avoid forcing the bit; allow the diamond segments to remove material naturally. After penetrating the tile, back the bit out slowly while maintaining water flow to clear debris. Inspect the hole edge and clean the surfaces before installing any fixtures.
What to consider before purchase
 Ensure a 68 mm hole suits the intended pipe, box or fixture dimensions
 Verify compatibility of the bit’s shank or adapter with your drill or core drilling tool
 Plan for wet drilling: access to water supply or a suitable cooling arrangement is required
 Consider tile thickness and substrate to confirm the bit’s suitability for the full installation depth
Usage recommendations
For best results use steady RPMs appropriate for core drilling in porcelain, maintain continuous water flow to the cutting edge, and secure the tile or workpiece to prevent movement. Replace the bit if cutting speed drops significantly or if segments show heavy wear to preserve hole quality and safety.

## FAQ

### How much does the Diamond Core Bit Silver KORONA 68 mm cost, and is it available for purchase?

The price is 35.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 02.07.2026 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 Silver 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 Silver 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/12381318/68539442_large.webp