Dualbell Superset + Collars

Go heavier than your heaviest dumbbell — collars included.

The Superset uses four Dualbells so you can load two dumbbells per side, reaching weights a single pair can't. Combine a 50 and a 30 for 80 lbs per side. A 50 and a 5 for 55. This bundle includes the quick-release collars to lock it all down.

Quick facts:

• Stack two dumbbells per side to go heavier
• Four adapters — combined capacity up to 500 lbs
• Rated for dumbbells up to 125 lbs each
• Fits any standard 1" (25mm) bar
• Quick-release collars included
• Patented and made in the USA
• Includes 4 Dualbells, 2 spacers, 1 pair of collars, and a storage bag

What's included:

• 4 Dualbells
• 2 spacers
• 1 pair of quick-release weight collars
• Drawstring storage bag
• Workout chart to get you started

(Bar and dumbbells sold separately.)

Why lifters choose the Superset:

• Go beyond your heaviest dumbbell. Stack two per side to hit weights a single dumbbell pair can't reach — and progress in small increments by mixing sizes.
• Everything to lock it in. Includes quick-release collars — one squeeze to lock, one to release.
• Built for heavy lifts. Zytel® Nylon 66, third-party stress tested to 1,900 lbs of force. Combined 500 lb capacity across four adapters.
• Rotates on the bar. Natural self-balancing motion across presses, squats, deadlifts, and rows.
• Fits what you own. Works with most hex, rubber-coated, and popular adjustable dumbbells.
• Stores anywhere. Tucks onto a shelf or in a closet. No rack needed.

Will it fit your setup? 

Dumbbells: Handles at least 4.25" (108mm) long and up to 1.38" (35mm) diameter — most standard and adjustable dumbbells, including Bowflex, Nuobell, Core Fitness, CAP, and NordicTrack. 

Bar: Any standard 1" (25mm) bar. (Not for 2" Olympic bars.) Inexpensive options we like: CAP Barbell 60" Solid Standard Bar and FitVid Standard barbell.

• • CAP Barbell 60-Inch Solid Standard Bar, Multiple Colors
  • FitVid Standard Barbell for Weightlifting and Powerlifting

The Dualbell Superset + Collars is the complete heavy setup — four adapters, two spacers, and the quick-release collars to lock everything in place. Load two dumbbells per side to go heavier than any single pair allows, progressing in almost any increment by mixing dumbbell sizes.

Clamp the Dualbells around your dumbbell handles, add the spacers, slide onto a standard 1" bar, and secure with the included collars. In seconds you've got a heavy barbell setup for squats, presses, deadlifts, and rows — using the dumbbells you already own.

Each adapter is made from Zytel® Nylon 66, third-party stress tested to 1,900 lbs of force, and rated for dumbbells up to 125 lbs each — a combined 500 lb capacity. Dualbell rotates smoothly on the bar for a natural, balanced motion, and everything stores in a drawer when you're done.

Patented and made in the USA. Plates optional.

Full description: The Dualbell Superset + Collars is the complete heavy setup — four adapters, two spacers, and the quick-release collars to lock everything in place. Load two dumbbells per side to go heavier than any single pair allows, progressing in almost any increment by mixing dumbbell sizes.