# Diamond hole saw set Proline 5–12 mm, 5 pieces, M14 arbor (27270)

**URL:** https://aio.lv/en/product--proline-27270--10857319
**Data updated:** 2026-03-07 18:07 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 27270
**EAN:** 5903755272706
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 57.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 47.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-27270--10857319

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Proline diamond hole saw set includes five diamond-coated cores sized 5, 6, 8, 10 and 12 mm with M14 arbor fitting. Designed for drilling clean holes in tile, ceramic, glass and other hard materials, the set is intended for use with angle grinders and rotary tools equipped with M14 thread. Practical for plumbing, tiling and installation work.

## Long description

Proline diamond hole saw set Proline 5–12 mm, 5 pieces, M14 arbor is a compact kit of five diamond-coated core bits in sizes 5, 6, 8, 10 and 12 mm. The cores are designed to create precise, clean holes in hard brittle materials such as ceramic tiles, porcelain, glass and natural stone. The set includes an M14-threaded arbor intended for direct mounting on angle grinders and compatible rotary tools, delivering fast drilling progress with minimal chipping when used with appropriate cooling and steady handling.
Advantages
The diamond coating on each core provides durable cutting edges and extended life when used on hard surfaces. A graduated range of diameters covers common hole sizes for plumbing and fixture work. The M14 arbor enables secure mounting on standard angle grinders and many rotary tools, offering stable rotation and consistent hole quality. The compact set is portable and convenient for trade professionals and DIY users who need quick access to multiple small-diameter hole options.
Suitable for
 Drilling holes in ceramic and porcelain tiles
 Cutting small-diameter openings in glass and mirrors
 Creating holes for plumbing fixtures and tap fittings
 Making precise holes in natural stone and engineered stone
Key specifications
 Core diameters: 5 mm, 6 mm, 8 mm, 10 mm, 12 mm
 Diamond-coated cutting edge for use on hard, brittle materials
 Suitable for use with angle grinders and rotary tools with M14-threaded arbor
 Designed for wet or dry drilling with appropriate cooling to extend tool life
 Compact 5-piece set for small-diameter holemaking
How to use
Select the appropriate core diameter for the required hole. Secure the M14 arbor into the angle grinder or rotary tool and attach the chosen diamond core. Mark the drilling point on the workpiece and, when drilling tiles or glass, use a low to moderate rotation speed and light pressure to avoid cracking. For best results, use water or another suitable coolant to reduce heat and remove dust; if dry drilling, pause regularly to let the tool and workpiece cool. Keep the tool steady and perpendicular to the surface until the core passes through.
Usage recommendations
Wear eye protection, gloves and a dust mask when drilling. Use slow to medium speeds and steady pressure, and apply water cooling when possible to extend diamond life and improve hole quality. Avoid excessive lateral force to prevent chipping or cracking of brittle materials.

## FAQ

### How much does the Proline diamond hole saw set 5–12 mm M14 cost, and is it available for purchase?

The price is 57.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 13.07.2026 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 Proline 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 Proline 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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