# Diamond Hole Saw GRAPHITE 28 mm with M14 shank, model TOP-55H308

**URL:** https://aio.lv/en/product--graphite-top-55h308--11943329
**Data updated:** 2026-03-10 11:48 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** TOP-55H308
**EAN:** 5902062509307
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 15.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-top-55h308--11943329

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Diamond hole saw by GRAPHITE, 28 mm cutting diameter with M14 threaded shank (model TOP-55H308). Designed for drilling precise circular holes in hard materials—ceramic, porcelain, tiles, glass and stone—using rotary tools and angle grinders that accept M14 fittings. Suitable for plumbing, tiling, electrical and renovation work requiring durable diamond cutting performance.

## Long description

Diamond Hole Saw GRAPHITE 28 mm with M14 shank, model TOP-55H308 is a purpose-built cutting accessory for creating precise round openings in hard surfaces. The tool features a 28 mm cutting diameter and an M14 threaded shank that fits most angle grinders and rotary tools with M14 fittings. It is engineered for use on ceramic, porcelain, glazed tiles, glass, and natural or engineered stone, providing consistent results for installation and repair tasks in plumbing, tiling, electrical work and general renovation.
Advantages
The diamond-segment cutting edge ensures fast, clean drilling while maintaining long service life on abrasive and brittle materials. The M14 shank offers secure attachment to compatible grinders and reduces wobble during operation for better hole accuracy. Its compact 28 mm diameter is suitable for common penetrations such as pipes, wiring sleeves, and anchors. The construction balances cutting speed and durability, minimizing the need for frequent replacements during typical trade use.
Suitable for
Drilling holes in ceramic and porcelain tiles
Creating openings in glass and glazed surfaces
Cutting through natural stone and engineered stone countertops
Plumbing and sanitary fixture installations
Electrical outlet and conduit penetrations in tiled surfaces
Key specifications
Cutting diameter: 28 mm
Shank type: M14 threaded shank for angle grinders and compatible rotary tools
Cutting material: diamond segments for abrasive and brittle materials
Primary applications: ceramic, porcelain, tiles, glass, natural and engineered stone
Typical tool compatibility: angle grinders and rotary tools accepting M14 fittings
How to use
Mount the hole saw onto an angle grinder or rotary tool with an M14 fitting, ensuring the shank is tightened securely. Mark the center point of the hole on the workpiece. Begin drilling at low speed to establish the initial positioning and then apply moderate, steady pressure. Use periodic back-and-forth motion and, where appropriate for the material, cool the cutting area with water to reduce dust and overheating; avoid excessive force to prevent cracking on brittle surfaces. After completing the cut, withdraw the hole saw carefully and clean the cutting segments of debris before storage.
Usage recommendations
For best results on tiles and glass, use water cooling and operate at controlled speed. Wear appropriate personal protective equipment including eye protection, gloves and a dust mask. Match the tool speed and pressure to the material hardness and thickness to extend cutting life and achieve a clean edge.

## FAQ

### How much does the Diamond Hole Saw GRAPHITE TOP-55H308 28 mm cost, and is it available for purchase?

The price is 18.49 € (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 10.07.2026 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/11943329/67386105_large.webp