# Diamond Glass and Tile Drill Bit GRAPHITE 8 mm cylindrical (57H279)

**URL:** https://aio.lv/en/product--graphite-57h279--11719374
**Data updated:** 2026-03-08 11:22 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 57H279
**EAN:** 5902062572790
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-57h279--11719374

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Diamond glass and tile drill bit by GRAPHITE, cylindrical shape, 8 mm diameter (model 57H279). Designed for drilling brittle materials such as glass and ceramic tiles using diamond abrasive at the tip for precise, clean holes. Suitable for handheld drills or drill presses with appropriate speed and cooling; useful for installation, glazing, bathroom or kitchen tile work and craft applications.

## Long description

Diamond glass and tile drill bit GRAPHITE 8 mm cylindrical (57H279) is a specialist cutting tool designed for making precise holes in brittle materials such as glass, ceramic tiles and porcelain. The bit features a diamond‑impregnated tip that grinds rather than chips, delivering clean, chip‑free holes with minimal radial stress. Its cylindrical shank fits standard drill chucks and is intended for use with handheld drills or drill presses when appropriate operating speeds and cooling are observed.
Advantages
The diamond abrasive tip provides high hardness and wear resistance for longer service life when working with brittle surfaces. The cylindrical 8 mm diameter ensures consistent hole size and stable cutting action. Because the cutting action is abrasive rather than a conventional cutting tooth, the bit reduces cracking and chipping at the hole edge and yields smooth, accurate results. Compatibility with common drilling tools and straightforward mounting make it convenient for both professional installers and hobbyists.
Suitable for
 Drilling holes in glass panes and mirrors
 Cutting holes in ceramic and porcelain tiles for plumbing and fixture installation
 Creating openings for wall anchors and inserts in tiled surfaces
 Craft and DIY projects involving fragile, brittle materials
Key specifications
 Tip material: diamond abrasive for grinding brittle substrates
 Shape: cylindrical shank for standard chucks
 Diameter: 8 mm working diameter
 Intended materials: glass, ceramic tiles, porcelain and similar brittle materials
 Use type: wet or cooled drilling recommended to extend tool life
How to use
Secure the workpiece and mark the drilling position. Start drilling at low speed to establish a shallow guide groove; avoid applying excessive axial force. For glass and tile work use light, steady pressure and maintain a low to moderate rotational speed. Keep the drill bit and work area cooled using a steady flow of water or periodic lubrication to prevent overheating and premature wear. When the hole is complete, withdraw the bit slowly while the tool is still turning to avoid chipping at the exit side.
Usage recommendations
Use protective eyewear and secure the material before drilling. For best results on large or thick panels, support the piece on a soft backing and use continuous water cooling. Replace the bit when grinding efficiency declines to avoid increased force and possible damage to the workpiece.

## FAQ

### How much does the GRAPHITE 8 mm diamond glass & tile drill bit 57H279 cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 100 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 03.07.2026 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 GRAPHITE 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 GRAPHITE 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/11719374/67100678_large.webp