Strength & Movement · Adjustable Dumbbells
BYZOOM FITNESS Classic Series 50LB Adjustable Dumbbell Single Unit,…
A single 5-50 lb cast-iron dumbbell with an anti-roll base, at half the price of a pair.
ByZoom Fitness
4.5 (36 ratings) · LeanScore 77
$149.99
Price checked Aug 22, 2026Who should skip this
You want a pair in the box.
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Our verdict
Reviewed by the LeanFed team · Hilly Shore Labs · Updated Aug 22, 2026 · Price checked Aug 22, 2026
Synthesized from public specs and manufacturer data — this listing doesn't yet have enough buyer reviews for a sentiment breakdown. We research and compare — we don't test products.
Get it if
Cast iron with a 12-sided anti-roll base, and it physically shortens as you strip weight.
The LeanScore, unpacked
Our published method blends real owner satisfaction with in-category value. No hidden math.
Owner satisfaction70/100
Value95/100
Specifications
- Weight range
- Up to 50 lb
- Adjustment
- Quick weight select
- Sold as
- Single
- Per-hand max
- 50 lb
Specs from the manufacturer listing and public product data; confirm the current listing before buying.
Manufacturer's claims (from ByZoom Fitness)ShowHide
- DURABLE CAST IRON CORE: BYZOOM FITNESS Classic Series uses a high-density, nylon-coated cast iron core for a compact, professional feel that handles years of high-intensity training. Buy one set, use longer. Best Value Dumbbell Set for Home and Garage Gym.
- STABLE 12-SIDED POLYGONAL BASE: Our signature 12-sided plates provide a stationary, rock-solid foundation for floor-based movements like renegade rows and push-ups. Steady and Safe.
- ADJUSTABLE LENGTH: Unlike fixed-length dumbbells that stay bulky, this unit physically shortens from 14.17" to 6.65" as you drop weight, ensuring a natural range of motion without the gear hitting your body.
- 1-SECOND QUICK WEIGHT SELECT: Stop wasting time between sets; the intuitive pull-pin mechanism allows for lightning-fast transitions between 10, 20, 30, 40, and 50 lbs to keep your heart rate and momentum high.
- PRO-GRADE LOCKING SECURITY: Train with absolute confidence using our patented safety dovetail mechanism that keeps the plates tightly fit and silent, delivering a secure, rattle-free lift even during explosive movements.
Marketing copy as listed by the manufacturer — not our assessment.