# Diamond Hole Saw 12 mm M14 GRAPHITE 55H303 for drilling hard materials

**URL:** https://aio.lv/en/product--graphite-55h303--12007430
**Data updated:** 2026-03-11 20:41 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 55H303
**EAN:** 5902062509253
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 12.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 10.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-55h303--12007430

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Diamond hole saw 12 mm with M14 thread, GRAPHITE model 55H303. Designed for precise circular drilling in hard materials such as ceramic, tile, glass and stone. Fits angle grinders and rotary tools with M14 arbor. Provides clean holes with reduced chipping; suitable for plumbing, electrical installs, tiling and countertop cutouts.

## Long description

Diamond Hole Saw 12 mm M14 GRAPHITE 55H303 is a diamond-coated circular cutting bit designed for drilling precise 12 mm diameter holes in very hard materials. The tool accepts an M14 threaded arbor and is intended for use with angle grinders and compatible rotary tools. Its diamond edge and segmented design deliver accurate round holes with minimal chipping, making it suitable for tasks that require clean openings in ceramic, porcelain tile, glass and natural or engineered stone.
Advantages
The diamond cutting surface provides fast penetration and durable wear resistance for repeated use on hard surfaces. The 12 mm diameter yields a small, precise hole suitable for fittings and anchors, while the M14 thread ensures secure mounting on standard angle grinders and many rotary tools. The design reduces edge chipping and helps maintain the integrity of fragile materials during drilling. Cooling and dust removal are optimized by the saw’s geometry, which supports controlled cutting and longer tool life.
Suitable for
Drilling holes in ceramic and porcelain tiles
Creating openings in glass for fixtures and hardware
Making precise holes in natural stone and engineered countertops
Plumbing and electrical installations requiring small diameter holes
Tile work and bathroom or kitchen renovation tasks
Key specifications
Cutting diameter: 12 mm
Thread type: M14 (for direct mounting on compatible tools)
Cutting edge: diamond-coated segment
Compatible tools: angle grinders and rotary tools with M14 arbor
Intended materials: ceramic, porcelain tile, glass, natural and engineered stone
How to use
Mount the diamond hole saw securely onto an angle grinder or rotary tool with an M14 arbor. Mark the drilling location and, where possible, support the workpiece to reduce vibration. Start drilling at low speed to establish the cutting position, then increase speed steadily while applying light, even pressure. Use intermittent drilling and, for demanding materials, periodically cool the cutting edge with water to reduce heat buildup and extend tool life. Avoid excessive force and allow the diamond edge to cut progressively.
Usage recommendations
For best results on tiles and glass, keep the cutting area wet and use moderate speed to prevent cracking. When drilling countertops or natural stone, support the underside of the material and use progressive pressure. Inspect the diamond edge before use and replace the saw when cutting performance declines to avoid damage to the workpiece.

## FAQ

### How much does the GRAPHITE 55H303 Diamond Hole Saw 12 mm M14 cost, and is it available for purchase?

The price is 12.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 09.07.2026 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/12007430/67462704_large.webp