PROIRON Adjustable Dumbbell Barbell Convertible Dumbbell Set Evolution Version 3-in-1 Full-Scale Barbell Iron Weights 2.5 to 20kg Adjustable for Home Gym Squats Weight Training Muscle Training Abdominal Training Weightlifting
Reasons why PROIRON's adjustable dumbbell set is recommended
Adjustable with a minimum weight of 2.5kg and a maximum weight of 10kg with one hand freely.
For those serious about training, you can adjust it as much as needed according to your muscle training menu.

Easy to adjust, can be changed in 30 seconds, and has high stability.

Not only usable as a dumbbell but also as a muscle training tool and barbell.
The plates look very cool, and holding them while training boosts motivation.

If beginners are unsure about choosing a dumbbell, PROIRON's adjustable dumbbell set is the way to go.
Its usability and refined design are said to be almost perfect in performance.

Caution
・Please tighten the lock securely before exercising.

・Children are prohibited from playing.

・Be careful when removing as it is heavy.

・Remove plates on the floor.



Casting process


Selected materials
Cast with molten pig iron.

Uses cast iron material that does not contain lead or phthalates.



Barring processing
Through barring and processing, authentic iron alloy plates are produced.



Spray preparation
Finished with hammer-type baking coating craft, making it beautiful, rust-resistant, impact-resistant, and wear-resistant.



Manufacturing complete
A lifetime usable dumbbell has been completed, with attractive weight and volume.



Freely adjustable
12 plates: 4 x 2.5kg; 4 x 1.25kg; 4 x 0.5kg.
Adjust the dumbbell weight according to your physical strength and training menu.



One extension bar included as a gift
The additional 35cm extension bar can connect with the dumbbell bar to also function as a barbell.
Suitable for beginner to advanced training menus.



Safety and stability
Includes important points that cannot be removed.
Can be safely trained with four slip-resistant O-rings.



Metal lock
PROIRON rotating lock is different from PVC lock, not deformed or broken, and securely locks the weight plates.



Cast iron dumbbell vs polyethylene dumbbell


Plate competition
Durable cast iron dumbbells are safer and can be used for a long time; unlike polyethylene dumbbells, they do not leak sand.



Handle competition
Cast iron dumbbells have steel handles that are more durable; polyethylene handles may break during exercise.



Spin lock competition
PROIRON cast iron dumbbells adopt cast iron spin locks, which are less prone to deformation, very durable, and highly stable.



Weight and volume competition
Polyethylene dumbbells are large and poorly balanced, making them difficult to train.
Cast iron is compact and easy to store.



Specifications of 20kg set dumbbell
- 4 x 2.5kg plates
- 4 x 1.25kg plates
- 4 x 0.5kg plates
- 2 x 356mm bars (each with two rubber rings)
- 4 x locks (each with one rubber ring)
- 1 x extension bar
The inner packaging has three layers.
When receiving the product, carefully check whether the contents of the packaging are complete and whether the exterior is undamaged.


Burn body fat
PROIRON sports equipment is designed so you can train muscles at work or at home.



Build a ripped body
With PROIRON dumbbells, beginners can train various parts of muscles and can be adjusted for future weight increases.



Dumbbells that can also become barbells
PROIRON includes a steel extension bar, creatively converting dumbbells into barbells, making it a versatile and cost-effective training item.

・"Plated finish authentic iron alloy" with baking coating craft and plating, making it rust-resistant, impact-resistant, wear-resistant, heat-resistant, and low-temperature brittle.
Used as the mainstream and traditional cast iron material for dumbbells and barbells, it contains no lead or phthalates, making it a healthy and eco-friendly choice that considers the human body and environment.
We highly recommend our authentic iron alloy for those who want to evolve into a ripped body.
・"Cast iron weighty and voluminous dumbbells" Polyethylene barbells have a strong plastic smell, are large and unbalanced, making training difficult.
Chrome-plated cast iron dumbbells that can also become barbells are highly durable.
Non-cast iron ones are less durable and may break.
Also, since they are not as large as polyethylene ones, storage is easier, compact, and space-saving.
Additionally, polyethylene barbells tend to be sticky with sweat and slippery, especially in hot summer, making training more difficult.
・"Ergonomic knurled handle grip" Knurled handles are easy to grip, slip-resistant, and feature a plated finish with rubber pads on the plate contact surface to securely hold the plates.
Designed to reduce fatigue and hand pain even during high-weight training.
The inner diameter of the included plate set (total weight 17kg) is about 25mm, and the inner diameter of the chrome-plated shaft is about 24mm.
Looks stylish and has a good texture, suitable for women's exercise and men's muscle training, can be used anytime at home, and the whole family can train together.
・"3-in-1 adjustable dumbbell that can also become a barbell" PROIRON's dumbbells are factory direct sales, with four plates each of 0.5kg, 1.25kg, and 2.5kg, adjustable freely from 2.5kg to 20kg, and include an important point that they cannot be removed.
The shaft (about 3.0kg each) and extension shaft are also recommended for exercise.
Connect with the joint shaft included with the dumbbell to also convert into a barbell.
Suitable for beginner to advanced training menus.
Adjust the weight according to your physical strength and training menu.
・"Performance, cost performance, design, dumbbells" PROIRON has been dedicated to the production and development of fitness equipment including dumbbells since its founding in 1997.
Achieves cost performance through direct sales.
Since its founding, it has continuously provided customers with the best products and services, responding to their needs, and continues to develop and evolve.
Careful packaging packs about three layers in one cardboard box, filled with dreams, hopes, and the source of muscle.
2025/09/25 10:53:58#ef7f317f457d51e58ed89e14b83d67b5daaaff53