# Combination Wrench 13 mm, Mastiff, Cr-V Steel

**URL:** https://aio.lv/en/product--mastiff-kt-30013--11885305
**Data updated:** 2026-03-09 21:01 (EET)
**Category:** Wrenches & Adjustable Wrenches
**Manufacturer:** Mastiff
**Manufacturer code:** KT-30013
**EAN:** 5904915191998
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Mastiff 13 mm combination wrench made from Cr-V (chromium-vanadium) steel. Features an open-end on one side and a boxed (ring) end on the other for versatile fastening and loosening of nuts and bolts. Suitable for mechanical repairs, assembly work, and household maintenance. Durable finish resists wear and provides reliable torque transmission.

## Long description

The Mastiff Combination Wrench 13 mm is a single-piece hand tool crafted from chromium-vanadium (Cr-V) steel, designed for general fastening and loosening of nuts and bolts. One end features a U-shaped open jaw for quick engagement and lateral access, while the opposite end has a boxed (ring) profile for full-circumference contact and improved torque transfer. The tool's durable surface finish reduces wear and corrosion, supporting repeated use in mechanical repairs, assembly tasks and routine household maintenance.
Advantages
The Cr-V steel construction delivers a balance of strength and toughness, helping to resist bending and wear during normal use. The combination of open and ring ends provides flexibility for working in confined spaces and for applications that require higher torque without rounding fasteners. A corrosion-resistant finish extends service life and keeps the wrench suitable for workshop and household environments. The 13 mm size covers a common range of metric fasteners used on vehicles, machines and domestic fittings.
Suitable for
Automotive maintenance and repairs (brake components, engine assemblies, bodywork fasteners)
Mechanical assembly and disassembly of machinery and equipment
Household maintenance and furniture assembly
Workshop tasks where compact hand tools are required
Key specifications
Size: 13 mm
Material: Chromium-vanadium (Cr-V) steel
Ends: Open (U-shaped) on one side and boxed (ring) on the other
Finish: Corrosion-resistant surface treatment
Design: Single-piece combination wrench for hand use
How to use
Select the 13 mm Mastiff combination wrench for fasteners that match the stated size. Place the open end over the nut or bolt head when side access is required or when engaging a fastener in tight spaces; use the boxed end for full circumference contact when applying higher torque or to reduce the risk of rounding. Apply steady, controlled force and ensure correct engagement before turning. For stubborn or seized fasteners, consider applying penetrating lubricant and re-assessing fit before applying additional torque.
Usage recommendations
Inspect the wrench before use for signs of damage or excessive wear. Use the correct size to avoid slippage and rounding of fasteners. Do not use the wrench as a hammer or leverage bar beyond recommended manual force; use appropriate tools for impact or high-torque needs. After use, clean and store the wrench in a dry place to maintain the protective finish and prolong service life.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 Mastiff 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 Mastiff 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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