# Insulation Knife Fiskars 420 mm model 125870 for mineral wool cutting

**URL:** https://aio.lv/en/product--fiskars-125870--11736620
**Data updated:** 2026-03-08 13:38 (EET)
**Category:** Universal knives
**Manufacturer:** Fiskars
**Manufacturer code:** 125870
**EAN:** 1110003143983
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fiskars-125870--11736620

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Fiskars insulation knife model 125870 is a 420 mm cutting tool designed for trimming and shaping mineral wool insulation. The knife provides a long blade length suitable for straight, precise cuts in insulation mats and batts, facilitating installation in walls, roofs and floors. It is intended for professional and DIY use where clean, even edges and efficient material handling are needed.

## Long description

Fiskars insulation knife 420 mm model 125870 is a purpose-built cutting tool for trimming and shaping mineral wool insulation. The long, straight blade offers a cutting length suited to insulation mats and batts, enabling smooth, even edges for installation in walls, roofs and floors. The tool is designed for both professional installers and DIY users who need accurate, efficient cutting of fibrous insulation materials.
Advantages
The long blade design reduces the number of passes required to cut wide insulation panels, improving work speed and consistency. The knife construction provides good control and straight-line guidance, helping to achieve clean edges that fit tightly into framing and junctions. The tool is lightweight and easy to handle during extended use, and its shape minimizes tearing or compression of mineral wool, which preserves insulation performance.
Suitable for
 Trimming mineral wool mats and batts to fit wall cavities
 Cutting insulation for roof and loft installations
 Shaping insulation for floor and suspended ceiling projects
 On-site adjustments during renovation and retrofit work
Key specifications
 Blade length: 420 mm cutting length suitable for standard insulation panel widths
 Intended material: mineral wool (glass wool, rock wool) and similar fibrous insulation
 Handle design: ergonomic for two-handed guidance and improved straight cuts
 Construction: lightweight tool designed for manual cutting of insulation
How to use
Mark the desired cutting line on the mineral wool with a straightedge or marker. Position the blade along the line and apply steady, even pressure while sliding the knife through the insulation. For thicker batts, use a single continuous stroke where possible or perform a shallow scoring pass followed by a full cut to reduce distortion. Maintain a firm grip on the handle and support the insulation to avoid compressing the material during cutting.
Usage recommendations
Wear appropriate personal protective equipment such as gloves, long sleeves and a dust mask when cutting mineral wool to reduce skin irritation and inhalation of fibers. Keep the blade clean and replace it if dull to ensure straight, efficient cuts. Store the knife in a dry place and transport it with a blade guard or sheath to prevent damage and accidental contact.

## FAQ

### How much does the Fiskars insulation knife 125870 420 mm cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 03.07.2026 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 Fiskars 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 Fiskars 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/11736620/67115902_large.webp