Personal Trainer Michael Marguilies Tests Dualbell Dumbbell Converters — Full Workout Trial

Can dumbbells really replace plates for barbell training?

NYC personal trainer Michael Marguilies put Dualbell dumbbell converters to the test across a full workout — including bench press, deadlifts, landmine work, and more.

👉 Watch the full trial below.

A Real Trainer. A Real Workout.

With over 40 years of training experience, NYC personal trainer Michael Marguilies doesn’t evaluate equipment lightly.

His first reaction?

“I was like, is this for real? Is it that easy that I can take my dumbbells and this bar and create a real gym feeling?”

That question drove the entire workout.

Turn Your Dumbbells Into a Complete Barbell System

Dualbell dumbbell to barbell converters allow dumbbells to:

• Slide onto the bar like plates
• Be secured with standard collars
• Function as barbell weight

This means you can perform:

• Bench press
• Deadlifts
• Squats
• Rows
• Overhead press
• Landmine exercises

All using the dumbbells you already own.

What Happens When You Actually Train With It

🔥 More Muscle Engagement

“My chest feels like it’s on fire.”

The positioning of the dumbbells can increase stabilization demands, leading to stronger muscle activation during pressing movements.

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🔄 Natural Movement and Rotation

Dualbells rotate smoothly on the bar, allowing movements like cleans, presses, and deadlifts to feel fluid and controlled.

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🧠 Core Activation You Can Feel

“The unstableness is adding to the core movement.”

Landmine exercises highlighted increased core engagement due to the dynamic load.

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💪 Improved Range of Motion

“I feel more lat activation… the stretch and contraction.”

Using dumbbells instead of plates allows for a different range of motion in exercises like rows.

One Setup. Full Workout.

During the trial, Michael performed:

• Bench Press
• Deadlifts
• Romanian Deadlifts
• Overhead Press
• Landmine Rotations
• Landmine Rows

Each movement reinforced the same idea:

The lift doesn’t change.
The effectiveness stays the same.

Is It Safe? Does It Really Work?

“They’re safe. They’re dependable. You get a great workout.”

Dualbell dumbbell converters are made from high-performance Zytel® Nylon 66 and are designed to handle serious weight.

You’re not thinking about the equipment.

You’re focused on the lift.

It’s Not About the Shape of the Weight

“It’s not about shapes or sizes… it’s about doing the movement correctly.”

This is what matters most.

• Proper form
• Controlled movement
• Consistent training

Dualbell allows you to focus on those fundamentals.

Build a Complete Home Gym With What You Already Own

If you already have dumbbells, you already have the foundation.

Dualbell turns them into a complete barbell system.

👉 Shop Dualbell Dumbbell Converters Now

Same Movements. More Possibilities.

• Train at home
• Save space
• Expand your workouts
• Use equipment you already own

Plates optional.