# Diamond Core Drill Bit for Gres 25 mm M14, Keltin

**URL:** https://aio.lv/en/product--keltin-5901477197741--11943031
**Data updated:** 2026-03-10 11:48 (EET)
**Category:** Drill Bits
**Manufacturer:** Keltin
**Manufacturer code:** 5901477197741
**EAN:** 5901477197741
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 7.43 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--keltin-5901477197741--11943031

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Diamond core drill bit for gres (porcelain stoneware) with a 25 mm cutting diameter and M14 thread, designed for drilling precise holes in hard ceramic and porcelain surfaces. Suitable for use with angle grinders or compatible rotary tools that accept M14-mounted accessories. Ideal for professionals and DIYers for tile installation, plumbing, electrical conduit entry, and fixtures.

## Long description

Diamond core drill bit for gres 25 mm with M14 thread from Keltin is designed for drilling precise circular holes in hard ceramic and porcelain surfaces. The tool is intended for use on gres (porcelain stoneware) tiles and similar hard coverings; it mounts on angle grinders or rotary tools that accept M14-threaded accessories. The cutting segment is diamond-grit bonded to a steel body to provide controlled penetration and extended life when used with appropriate technique and cooling.
Advantages
The diamond cutting edge provides efficient material removal and a consistent hole diameter of 25 mm, while the M14 thread allows quick, secure mounting on compatible power tools. The steel core delivers rigidity and straight drilling, reducing wobble and chipping on fragile tile surfaces. When used with water cooling or intermittent drilling, the bit demonstrates improved durability and reduced heat-related wear compared with non-diamond alternatives.
Suitable for
Drilling clean holes in gres and porcelain stoneware tiles
Creating openings for plumbing fixtures and pipe entries
Installing electrical conduits and recessed fixtures in tiled walls
Tile installation and renovation projects requiring precise circular cuts
Key specifications
Cutting diameter: 25 mm
Shank / thread type: M14 threaded mount for angle grinders and compatible rotary tools
Cutting material: diamond grit bonded segment
Body material: steel core for stiffness and straight drilling
Application surface: gres (porcelain stoneware) and hard ceramic tiles
How to use
Secure the M14 diamond core bit to a compatible angle grinder or rotary tool according to the tool manufacturer's instructions. Mark the drilling location on the tile, start at low speed to locate the hole, and maintain a steady perpendicular orientation to avoid wandering. For best results, use water as a coolant and lubricant during drilling: apply continuous light water flow or periodically cool the bit to control heat and remove debris. Use light pressure and allow the diamond segment to cut; avoid forcing the bit. After completing the hole, clean the tile and inspect the edge for chipping.
Usage recommendations
Recommended practice is to drill at moderate revolutions per minute with water cooling or intermittent contact to extend the bit life. Use appropriate personal protective equipment, secure the workpiece, and follow the power tool safety guidelines to prevent accidents and ensure a straight, clean hole in gres and porcelain tiles.

## FAQ

### How much does the Diamond Core Drill Bit 25 mm M14 — Keltin cost, and is it available for purchase?

The price is 8.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 404 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 16.07.2026 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 Keltin 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 Keltin 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

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