# Diamond drill bit Proxxon 28846 — diameter 3.8 cm, 1 piece

**URL:** https://aio.lv/en/product--proxxon-28-846--1442312
**Data updated:** 2026-03-07 10:59 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** Proxxon
**Manufacturer code:** 28 846
**EAN:** 4006274288461
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 17.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 14.45 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proxxon-28-846--1442312

## 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

Proxxon 28846 is a single diamond drill bit with a 3.8 cm diameter designed for drilling tasks. Intended for use with drills, this bit provides a hard-wearing cutting surface suitable for precision drilling in hard materials where diamond-tipped tools are required. Supplied as one piece for replacement or specialty drilling applications.

## Long description

Proxxon 28846 is a single diamond drill bit with a 3.8 cm (38 mm) cutting wheel and a 3/32" (2.35 mm) shank, intended for precision drilling, cutting and shaping of very hard and brittle materials. The diamond-coated cutting surface delivers wear resistance and consistent performance when working with glass, porcelain, ceramics, composites and many hard plastics and non-ferrous metals. Cooling holes in the wheel reduce heat buildup during use to help avoid burn marks and extend tool life.
Advantages
The diamond grit on the wheel provides high abrasive strength and longer life compared with conventional bits on hard materials. Integrated cooling holes reduce temperature rise and minimize the risk of heat-related damage to the workpiece. The standard 3/32" (2.35 mm) shank fits common rotary tools and drills, making replacement and installation straightforward. Supplied as a single piece, it is suitable for targeted repairs, specialty jobs or for keeping a spare bit on hand.
Suitable for
 Drilling and cutting glass and porcelain
 Shaping and grooving ceramics and tiles
 Working on fiberglass and composites
 Light cutting and deburring of non-ferrous metals and hard plastics
 Precision rotary tool tasks and specialty repair work
Key specifications
 Cutting wheel diameter: 38 mm
 Shank diameter: 3/32" (2.35 mm)
 Coating: diamond abrasive on cutting surface
 Intended materials: glass, porcelain, ceramics, fiberglass, non-ferrous metals, hard plastics
 Design features: cooling holes to reduce heating
 Quantity: 1 piece
How to use
Secure the diamond drill bit in a compatible rotary tool or drill with a 3/32" (2.35 mm) collet or chuck. For drilling glass, ceramics and similar brittle materials, use a steady low-to-medium speed and apply light, consistent pressure. Where possible, supply water or other coolant to the area or take advantage of the bit's cooling holes to reduce heat and prevent burn marks. Withdraw periodically to clear debris and check progress. For cutting or grinding operations, keep the tool moving to avoid localized overheating and achieve an even finish.
Usage recommendations
Use personal protective equipment such as safety glasses and a dust mask when working with brittle or dusty materials. Start on a scrap piece to set correct speed and pressure, and maintain a coolant flow or intermittent operation to extend bit life and preserve workpiece quality.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Stainless steel |
| Proper use | Drill |
| Suitable for materials | Ceramic, Glass, Plastic |
| Drill bit diameter | 38 mm |
| Shank diameter | 2.35 mm |
| Shank shape | Cylindrical shank |
| Number of drill bits | 1 pc(s) |
| Drill bit type | Diamond drill bit |

## FAQ

### How much does the Diamond drill bit Proxxon 28846 cost, and is it available for purchase?

The price is 17.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 25 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 Proxxon 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 Proxxon 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/1442312/57952987_large.webp