# Diamond core bit 12 mm with M14 thread Makita D-79946 for rotary tools and angle grinders

**URL:** https://aio.lv/en/product--makita-d-79946--11266291
**Data updated:** 2026-03-20 09:48 (EET)
**Category:** Drill Bits
**Manufacturer:** Makita
**Manufacturer code:** D-79946
**EAN:** 0197050358127
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 17.99 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 14.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--makita-d-79946--11266291

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Wednesday | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Diamond core bit 12 mm Makita D-79946 features a 12 mm cutting diameter and M14 threaded shank for mounting on compatible rotary tools and angle grinders. Designed for drilling small holes in hard materials such as ceramic, tile, glass and stone. Suitable for precise, clean through-holes and detail work in construction, tiling and glazing applications.

## Long description

Diamond core bit 12 mm Makita D-79946 with an M14 threaded shank is designed for drilling precise small holes in hard materials. The 12 mm cutting diameter provides a clean, narrow through-hole suitable for tile, ceramic, glass and natural stone. The bit mounts on rotary tools and angle grinders that accept M14-thread accessories and is intended for detail work where controlled, accurate drilling is required.
Advantages
The diamond cutting edge ensures efficient drilling in brittle and abrasive surfaces with reduced chipping. The M14 thread offers secure mounting on compatible rotary tools and angle grinders for stable operation. Its compact 12 mm diameter gives good control for precision holes and minimizes material removal, allowing neat, repeatable results in finishing and installation tasks.
Suitable for
 Drilling holes in ceramic and porcelain tiles
 Creating openings in glass and glazed surfaces
 Detail drilling in natural stone and marble
 Small through-holes for plumbing fixtures and fittings
 Repair and finishing work in tiling and glazing
Key specifications
 Cutting diameter: 12 mm
 Shank/thread type: M14 threaded shank for direct mounting
 Tip material: diamond grit cutting segment
 Intended materials: ceramic, porcelain, tile, glass, natural stone
 Typical tool compatibility: rotary tools and angle grinders with M14 thread
How to use
Mark the drilling point and secure the workpiece to prevent movement. Fit the core bit to an appropriate rotary tool or angle grinder with an M14 thread and ensure the tool is switched off before mounting. Start drilling at low speed with light pressure to establish the hole, then increase speed gradually while maintaining steady, moderate pressure. For clean holes in brittle materials, consider using water cooling or intermittent drilling to reduce heat and dust. Withdraw the bit periodically to remove debris and avoid binding.
Usage recommendations
Use appropriate personal protective equipment such as safety glasses, gloves and respiratory protection when drilling. For best results in ceramic, porcelain and glass, use light pressure, controlled speed and, where possible, water as a coolant to prolong bit life and reduce chipping. Verify that your rotary tool or angle grinder supports M14 accessories before use.

## FAQ

### How much does the Diamond core bit 12 mm Makita D-79946 cost, and is it available for purchase?

The price is 17.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 40 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 Wednesday 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 Makita 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 Makita 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/11266291/62670407_large.webp