# Open-End Box Wrench 28 mm Mastiff KT-30028

**URL:** https://aio.lv/en/product--mastiff-kt-30028--11884762
**Data updated:** 2026-03-09 21:00 (EET)
**Category:** Wrenches & Adjustable Wrenches
**Manufacturer:** Mastiff
**Manufacturer code:** KT-30028
**EAN:** 5904915197907
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mastiff-kt-30028--11884762

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Mastiff 28 mm combined wrench (open-end and box) KT-30028 — a hand tool for tightening and loosening hexagonal nuts and bolts. Made for manual mechanical work, repair and assembly tasks, it provides a fixed 28 mm jaw and a boxed end for secure grip. Suitable for automotive, industrial and household maintenance where a single-size wrench is required.

## Long description

The Mastiff Open-End Box Wrench 28 mm KT-30028 is a single-size hand tool designed for tightening and loosening hexagonal nuts and bolts. It combines an open-end jaw and a boxed end in one steel construction to provide versatility for manual mechanical work, repair and assembly tasks. The fixed 28 mm size ensures consistent fit on compatible fasteners, and the boxed end offers secure engagement for higher torque applications.
Advantages
This 28 mm combined wrench offers the practicality of two working ends in a single tool, reducing the need to switch between separate wrenches. The open-end side allows quick placement on nuts in tight or partially obstructed locations, while the boxed end gives a more stable grip for loosening or tightening with greater torque. The one-piece construction provides dimensional stability and reliable contact with fastener faces, helping to minimise rounding of nuts and bolts when used correctly.
Suitable for
Automotive maintenance and wheel or suspension work where 28 mm fasteners are used
Industrial machinery maintenance and assembly tasks requiring a fixed-size wrench
Household and workshop repairs involving 28 mm nuts and bolts
Key specifications
Tool type: combined open-end and box wrench
Size: 28 mm fixed jaw
Material: forged steel construction (hand tool grade)
Ends: one open-end and one boxed end for secure engagement
Finish: corrosion-resistant surface treatment suitable for workshop use
How to use
Select the 28 mm Mastiff wrench and position the appropriate end on the fastener. Use the open end to quickly place the tool in confined spaces or when side access is required. For higher torque or to reduce the risk of rounding, place the boxed end fully over the nut or bolt head and turn with steady force. Apply gradual force and ensure the wrench is fully seated on the fastener faces to maintain proper contact and avoid slippage. Store the wrench in a dry tool drawer or on a rack to preserve the finish.
Usage recommendations
Use the boxed end for final tightening or initial loosening when higher torque is needed. Avoid using the open-end for high-torque applications that could damage the fastener. Inspect the wrench for wear or deformation before use and do not apply impact force or use with cheater bars. Keep the tool clean and lightly lubricated to prevent corrosion and ensure long service life.

## FAQ

### How much does the Mastiff 28 mm combined wrench KT-30028 cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 200 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 14.07.2026 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 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

https://aio.lv/img/cache/product/11884762/67304342_large.webp