1. Produttu Finituview
The FEIERDUN 4-in-1 Adjustable Dumbbell set is a versatile fitness equipment designed for home use. It allows seamless transition between a dumbbell, barbell, kettlebell, and push-up stand, providing a comprehensive workout solution in a compact design. This set is ideal for various fitness exercises, muscle development, weight loss, and maintaining overall fitness for both men and women.
The adjustable weight range for dumbbells is approximately 2.3 kg to 9 kg (5 lbs to 20 lbs) per dumbbell, for kettlebells approximately 1.6 kg to 8.8 kg (3.5 lbs to 19.5 lbs), and for barbells approximately 3.2 kg to 18.1 kg (7 lbs to 40 lbs).

Figura 1: Overview of the 5-in-1 functionality.
2. Informazioni di sicurezza
- Cunsultate sempre un prufessiunale di a salute prima di inizià qualsiasi novu prugramma d'eserciziu.
- Verificate tutti i cumpunenti per danni prima di ogni usu. Ùn aduprate micca se una parte hè dannighjata o usurata.
- Ensure all weight plates are securely fastened with the safety nuts before lifting.
- Aduprate tecniche di elevazione adattate per evità ferite.
- Mantene i zitelli è l'animali alluntanati da l'equipaggiu durante l'usu.
- Do not drop the weights from a height, as this may damage the equipment or flooring.
- Store the equipment in a dry, safe place when not in use.
3. Cuntenutu di u pacchettu
Verificate chì tutti i cumpunenti elencati quì sottu sò presenti in u vostru imballaggio.

Figure 2: Accessory List (48LBS / 21.7 kg equivalent set).
- Dumbbell Bar x 2
- Fixed Nut x 6
- Kettlebell Handle x 2
- Barbell Connecting Rod x 1
- Kettlebell Base Rod x 1
- Piatti di pesu:
- 2.75 lbs (1.25 kg) x 4
- 3.5 lbs (1.6 kg) x 4
- 5.5 lbs (2.5 kg) x 4
4. Setup è Assemblea
4.1. Assembling Dumbbells
- Select the desired weight plates.
- Slide the weight plates onto the dumbbell bar.
- Secure the weight plates on both ends of the dumbbell bar using the fixed nuts. Turn the nuts clockwise until they are tight and the plates are stable.

Figure 3: Dumbbell weight adjustment.
4.2. Assembling a Barbell
- Assemble two dumbbells as described in Section 4.1.
- Connect the two assembled dumbbells using the barbell connecting rod. Ensure the rod is securely screwed into both dumbbell bars.
- Verify that all connections are tight and stable before use.
4.3. Assembling a Kettlebell
- Attach the kettlebell base rod to the desired weight plates.
- Secure the weight plates with a fixed nut.
- Attach a kettlebell handle to the top of the kettlebell base rod. Ensure it is firmly screwed in.
4.4. Using as Push-up Stands
The kettlebell handles can be used as push-up stands. Ensure they are placed on a stable, non-slip surface before performing exercises.
5. Operating Instructions
This section provides general guidance for using your FEIERDUN 4-in-1 Adjustable Dumbbell set. Always prioritize proper form and controlled movements during your workouts.
5.1. Ajustamentu di pesu
- To increase weight: Unscrew the fixed nuts, add more weight plates, and then re-tighten the nuts securely.
- To decrease weight: Unscrew the fixed nuts, remove weight plates, and then re-tighten the nuts securely.
- Always ensure an even distribution of weight plates on both sides of the bar for balance.
5.2. Ergonomic Grip and Anti-Roll Design
The dumbbell bars feature an anti-slip ABS material for a secure and comfortable grip. The 12-sided anti-roll design of the weight plates prevents them from rolling away when placed on the floor, enhancing safety and convenience.

Figure 4: Ergonomic grip design.

Figure 5: 12-sided anti-roll design.
5.3. Barbell Shoulder Pad
When using the barbell configuration, the long barbell connecting rod is equipped with a 30mm thick premium foam pad over a 5mm thick steel tube. This multi-angle shoulder fit design is breathable and non-flip, providing comfort and stability during exercises like squats, reducing neck strain.

Figure 6: Barbell shoulder pad for multi-angle shoulder fit.
6. Mantenimentu
- Pulizia: Sguassate l'attrezzatura cù a publicitàamp cloth after each use to remove sweat and dirt. Avoid using harsh chemicals or abrasive cleaners.
- Conservazione: Store the adjustable dumbbell set in a cool, dry place away from direct sunlight and extreme temperatures.
- Ispezione: Periodically check all components, especially the fixed nuts and connecting rods, for any signs of wear, damage, or loosening. Tighten any loose parts immediately.
- Prevenzione di a ruggine: The weight plates are designed to be rust-resistant. However, ensure they are kept dry to prolong their lifespan.
7. Risoluzione di prublemi
| Prublemu | Causa Possibile | Soluzione |
|---|---|---|
| Weight plates are loose or wobble. | Fixed nuts are not tightened sufficiently. | Ensure all fixed nuts are securely tightened clockwise until the plates are stable. |
| Barbell connection feels unstable. | Barbell connecting rod not fully screwed in. | Verify that the barbell connecting rod is firmly screwed into both dumbbell bars. |
| Kettlebell handle feels loose. | Kettlebell handle or base rod not fully tightened. | Ensure the kettlebell handle is firmly screwed into the base rod and the base rod is secured to the plates. |
| Equipment makes unusual noises during use. | Cumponenti allentati o assemblaggio improprio. | Stop use immediately. Re-inspect all connections and ensure proper assembly. Tighten any loose parts. |
8. Specificazioni
| Feature | Detail |
|---|---|
| Numero di mudellu | FBM-DUM-Y-40LB |
| Marca | FEIERDUN |
| Pesu tutale (circa) | 18.1 kg (40 lbs) |
| Materiale | Plastic (Acrylonitrile Butadiene Styrene), Iron, Mud, Sand, Steel |
| Funzione speciale | Adjustable Weight, 4-in-1 Functionality (Dumbbell, Barbell, Kettlebell, Push-up Stand) |
| Dumbbell Handle Diameter | Approx. 4 inches (10.16 cm) circumference |
| Barbell Connecting Rod Thickness | 5 mm steel tube with 30 mm foam |
| Dimensioni di u produttu (L x W x H) | 49 x 32 x 32 cm (19.3 x 12.6 x 12.6 inch) |
| U numeru di pezzi | 2 (main units, plus accessories) |
9. Garanzia è Support
FEIERDUN is committed to providing excellent customer service. If you encounter any issues with your product or if it does not meet your expectations, please do not hesitate to contact us. We aim to respond to all inquiries within 12 hours.
For support, please refer to the contact information provided with your purchase or visit the official FEIERDUN websitu.





