# Hex key Proline 3 mm — single L-shaped Allen wrench, model 48521

**URL:** https://aio.lv/en/product--proline-48521--11819096
**Data updated:** 2026-03-09 11:06 (EET)
**Category:** Wrenches & Adjustable Wrenches
**Manufacturer:** Proline
**Manufacturer code:** 48521
**EAN:** 5903755485212
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 4.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-48521--11819096

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Proline 48521 is a single 3 mm hex key (Allen wrench) designed for manual fastening and assembly tasks. The L-shaped steel key provides access to recessed hex sockets and allows leverage for tightening and loosening bolts and screws. Suitable for furniture assembly, bicycle maintenance, electronics and general workshop use where a compact metric 3 mm hex tool is required.

## Long description

Proline 3 mm hex key model 48521 is a single L-shaped Allen wrench intended for manual fastening and assembly operations. Made from hardened steel, the compact 3 mm tool fits metric hex sockets and provides access to recessed fasteners in furniture, bicycles, electronics and workshop equipment. Its L-shape combines a short and a long arm to allow precise positioning and adjustable leverage for tightening and loosening bolts and screws.
Advantages
The simple, single-piece design ensures reliable torque transfer with minimal flex. Hardened steel construction improves wear resistance for repeated use. The L-shaped form gives two working lengths for reach and leverage in confined spaces, while the small 3 mm hex profile matches standard metric fasteners. The tool is compact and easy to store in a toolbox or pocket, and its straight, machined hex edges reduce rounding of screw heads when used correctly.
Suitable for
Furniture assembly and disassembly
Bicycle adjustments and maintenance
Electronics repair and small appliance servicing
General workshop tasks and light mechanical work
Key specifications
Tool type: L-shaped hex key (Allen wrench)
Hex size: 3 mm
Material: hardened steel
Finish: machined hex edges
Design: single-piece, L-shaped with short and long arm
How to use
Insert the 3 mm hex end fully into the corresponding hex socket of the fastener to ensure full contact. Use the short arm for higher torque and the long arm for greater reach or increased leverage. Turn slowly and steadily to avoid stripping the fastener; if resistance is high, verify that the tool is correctly seated and aligned. After use, wipe the key clean and store it in a dry toolbox or holder to prevent corrosion.
Usage recommendations
For best results, select the 3 mm hex key only for matching metric fasteners and avoid using cheater bars or extensions that can overload the tool. When working on painted or delicate surfaces, protect surrounding areas and apply controlled force to prevent damage to components and fastener heads.

## Specifications

| Feature | Value |
|---|---|
| Number of keys included | 1 pc(s) |
| Hex key sizes (metric) | 3 |

## FAQ

### How much does the Hex key Proline 3 mm 48521 cost, and is it available for purchase?

The price is 5.49 € (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 07.07.2026 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

https://aio.lv/img/cache/product/11819096/67292983_large.webp