# Hole saw bi-metal Dedra 121 mm (4-3/4")

**URL:** https://aio.lv/en/product--dedra-08w121--4723816
**Data updated:** 2026-03-07 14:52 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** Dedra
**Manufacturer code:** 08W121
**EAN:** 5902628081216
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.99 €
**Prices and availability valid until:** 2026-08-12 23:59
**Price without VAT (21%):** 14.04 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dedra-08w121--4723816

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.89 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

Bi-metal hole saw by Dedra with a cutting diameter of 121 mm (4-3/4"). Designed for cutting circular openings in a variety of materials where bi-metal construction provides durability and heat resistance. Suitable for use with drills and drill drivers that accept standard hole saw arbors; commonly used for plumbing, electrical installations, HVAC, and woodworking tasks.

## Long description

The Dedra bi-metal hole saw 121 mm (4-3/4") is a circular cutting tool designed to create clean round openings in a variety of materials. Constructed with a bi-metal blade, it combines a high-speed steel cutting edge with a flexible alloy body to improve durability and resistance to heat during prolonged cutting tasks. The hole saw is compatible with standard hole saw arbors and is intended for use with drills and drill drivers in professional and DIY settings.
Advantages
The bi-metal construction provides an improved balance of hardness and toughness, extending blade life compared with low-carbon alternatives. Heat-resistant cutting teeth reduce the risk of premature dulling under sustained use. The saw's 121 mm cutting diameter delivers a large, precise opening in a single pass, reducing the need for secondary finishing. The toothed rim is designed to cut through a broad range of materials while maintaining shape and cutting speed.
Suitable for
 Creating pipe and conduit openings for plumbing and HVAC installations
 Cutting circular holes for electrical boxes, fixtures, and recessed lighting
 Making holes in wood and composite materials for joinery or ventilation
 General on-site and workshop drilling where a large diameter hole is required
Key specifications
 Cutting diameter: 121 mm (4-3/4")
 Blade material: bi-metal (high-speed steel teeth bonded to alloy body)
 Intended mounting: compatible with standard hole saw arbors for drills and drivers
 Primary use: cutting circular openings in wood, composite boards, plastics and thin metals
How to use
Secure the hole saw to a compatible arbor and tighten according to the arbor manufacturer's instructions. Mark the center point of the desired opening and, if available, use a pilot drill bit or the arbor's pilot bit to locate and stabilize the cut. Start drilling at low speed to establish the cutting line, then increase speed and apply steady, even pressure. Allow the saw to cut without forcing; periodically withdraw the saw to clear chips and reduce heat buildup. After completing the cut, remove the plug from the hole saw and finish the opening as needed to remove burrs.
Использование и обслуживание
The tool performs best when used with adequate clamping, correct arbor fitting and appropriate drill speed for the material. Inspect the teeth for wear before use, keep the blade clean of resin and chips, and replace the hole saw when tooth damage or significant dulling occurs to maintain cutting quality and safety.

## FAQ

### How much does the Hole saw Dedra 121 mm (4-3/4") cost, and is it available for purchase?

The price is 16.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 80 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 31.07.2026 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 Dedra 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 Dedra 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/4723816/68545885_large.webp