# Hand Grip Adjustable 10–40 kg Master MAS4A325 — Master hand exerciser, adjustable resistance 10–40 kg

**URL:** https://aio.lv/en/product--master-mas4a325--12041286
**Data updated:** 2026-03-12 19:23 (EET)
**Category:** Resistance Bands & Hand Grippers
**Manufacturer:** Master
**Manufacturer code:** MAS4A325
**EAN:** 8592833007377
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--master-mas4a325--12041286

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Adjustable hand grip Master MAS4A325 provides variable resistance from 10 to 40 kg for strengthening hand, finger and forearm muscles. Compact exerciser with adjustable tension is suitable for rehabilitation, grip training, climbers, musicians and office workers to prevent fatigue. Simple mechanical adjustment lets you change load levels for progressive training and daily use.

## Long description

The Master Hand Grip Adjustable 10–40 kg (Master MAS4A325) is a compact mechanical hand exerciser designed to provide progressive resistance for strengthening the muscles of the hand, fingers and forearm. The device offers adjustable tension from 10 to 40 kg, enabling targeted training and gradual load increases. Its small footprint and simple adjustment mechanism make it suitable for home use, physiotherapy exercises and regular strengthening routines.
Advantages
This adjustable hand grip provides a continuous range of resistance that allows gradual progression without replacing equipment. The mechanical adjustment is intuitive and durable, ensuring stable performance during repeated use. Its compact and lightweight construction makes the exerciser portable and easy to store. The ergonomically shaped handles provide secure contact with the hand, reducing slippage and enabling precise control of grip movement.
Suitable for
Rehabilitation after hand, finger or wrist injuries
Grip strength training for climbers and athletes
Musicians working to improve finger endurance and dexterity
Office workers preventing hand fatigue and repetitive strain
Progressive home exercise programs for forearm and hand conditioning
Key specifications
Adjustable resistance range: 10–40 kg
Mechanical tension adjustment for incremental load changes
Compact, portable design suitable for tabletop or pocket carry
Ergonomic handle shape for secure grip and comfortable use
Durable construction intended for repeated daily use
How to use
Hold the hand grip with the palm around the handles and place your fingers on the upper handle. Set the desired resistance using the adjustment mechanism before starting the exercise. Squeeze the handles together in a controlled motion, then slowly release to the starting position. Perform sets of repetitions according to your training or rehabilitation plan, increasing resistance gradually as strength improves. For balanced development, perform exercises with both hands and combine gripping movements with finger-specific drills when required.
Usage recommendations
Begin training at the lower end of the resistance range and increase load in small increments to avoid overuse. Use the hand grip for short sessions several times a day during rehabilitation, and for longer, structured sets during strength training. If you experience pain beyond normal muscle fatigue, reduce resistance or stop and consult a healthcare professional.

## FAQ

### How much does the Adjustable Hand Grip 10–40 kg Master MAS4A325 cost, and is it available for purchase?

The price is 11.49 € (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 16.07.2026 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 Master 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 Master 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/12041286/67528334_large.webp