Is this machine plate loaded or selectorized?

This machine is plate loaded. You can use your own Olympic plates for smooth resistance and progressive overload.

Will this leg extension & curl machine fit in a home gym?

Yes. With a compact 45” × 45” × 45” footprint and transport wheels, it’s built to fit residential spaces like garages, basements, or dedicated training rooms.

What muscles does this machine train?

Leg extensions isolate the quadriceps, while seated leg curls target the hamstrings. Together they provide a complete lower-body workout.

How do you use the dual function design?

For leg extensions, place ankles under the rollers and extend to train the quads. For seated leg curls, adjust the pads and curl the roller back to hit hamstrings. Switching exercises takes just seconds.

What is the maximum load capacity?

The 10” Olympic sleeve holds up to four 45 lb plates for a total of about 180 lbs of resistance.

SMRTFT

NÜOBELL Adjustable Dumbbells

Name: NÜOBELL Adjustable Dumbbells
Brand: Gronk Fitness
SKU: D1002NUO80
Price: 875.00 USD
Availability: InStock

D1002NUO80

$ 875.00

80lbs

Classic Black

Matte Black

Ash

Tactical

Rack Only

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With a patented twist-lock mechanism, you can adjust instantly from\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"438\" data-start=\"423\"\u003e5 to 80 lbs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacross 16 settings. One compact pair replaces\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"513\" data-start=\"485\"\u003e16 traditional dumbbells\u003c\/strong\u003e, saving you space while keeping your workouts fast and fluid.\u003c\/p\u003e\n\u003ch3 data-end=\"646\" data-start=\"584\"\u003e80 lb Adjustable Dumbbells with Instant Weight Selection\u003c\/h3\u003e\n\u003cul data-end=\"1088\" data-start=\"647\"\u003e\n\u003cli data-end=\"738\" data-start=\"647\"\u003e\n\u003cstrong data-end=\"679\" data-start=\"649\"\u003eRapid 5-second adjustments\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ekeep momentum during circuits, supersets, and drop sets.\u003c\/li\u003e\n\u003cli data-end=\"832\" data-start=\"739\"\u003ePrecise 5-lb increments (5–80 lbs) support progressive overload and smarter training.\u003c\/li\u003e\n\u003cli data-end=\"909\" data-start=\"833\"\u003e\n\u003cstrong data-end=\"857\" data-start=\"835\"\u003eCompact 17\" length\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efits standard dumbbell racks and small home gyms.\u003c\/li\u003e\n\u003cli data-end=\"990\" data-start=\"910\"\u003e\n\u003cstrong data-end=\"935\" data-start=\"912\"\u003eKnurled 32mm handle\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides a confident, barbell-style grip under load.\u003c\/li\u003e\n\u003cli data-end=\"1088\" data-start=\"991\"\u003e\n\u003cstrong data-end=\"1028\" data-start=\"993\"\u003ePrecision-machined steel plates\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edeliver durability and the solid feel of fixed dumbbells.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1125\" data-start=\"1095\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-end=\"1571\" data-start=\"1126\"\u003e\n\u003cli data-end=\"1187\" data-start=\"1126\"\u003e\n\u003cstrong data-end=\"1145\" data-start=\"1128\"\u003eWeight Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5–80 lbs per dumbbell (5 lb increments)\u003c\/li\u003e\n\u003cli data-end=\"1233\" data-start=\"1188\"\u003e\n\u003cstrong data-end=\"1203\" data-start=\"1190\"\u003eSettings:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e16 (5, 10, 15 … 75, 80 lbs)\u003c\/li\u003e\n\u003cli data-end=\"1277\" data-start=\"1234\"\u003e\n\u003cstrong data-end=\"1251\" data-start=\"1236\"\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e17\" L × 7.5\" W × 7.5\" H\u003c\/li\u003e\n\u003cli data-end=\"1331\" data-start=\"1278\"\u003e\n\u003cstrong data-end=\"1291\" data-start=\"1280\"\u003eHandle:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e32mm knurled aluminum, rust-resistant\u003c\/li\u003e\n\u003cli data-end=\"1377\" data-start=\"1332\"\u003e\n\u003cstrong data-end=\"1352\" data-start=\"1334\"\u003eHandle Length:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4.3\" (110mm) grip zone\u003c\/li\u003e\n\u003cli data-end=\"1484\" data-start=\"1378\"\u003e\n\u003cstrong data-end=\"1394\" data-start=\"1380\"\u003eMaterials:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePrecision-machined steel plates, reinforced polymer construction, aluminum V-connectors\u003c\/li\u003e\n\u003cli data-end=\"1521\" data-start=\"1485\"\u003e\n\u003cstrong data-end=\"1502\" data-start=\"1487\"\u003eNet Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e160 lbs per pair\u003c\/li\u003e\n\u003cli data-end=\"1571\" data-start=\"1522\"\u003e\n\u003cstrong data-end=\"1537\" data-start=\"1524\"\u003eIncludes:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2 dumbbells, 2 portable cradles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1606\" data-start=\"1578\"\u003eWhy Choose NÜOBELL 80?\u003c\/h3\u003e\n\u003cp data-end=\"1931\" data-start=\"1607\"\u003eUnlike cage-style adjustables or pin-selector systems, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"1699\" data-start=\"1666\"\u003epatented twist-lock mechanism\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoffers natural balance and instant weight changes. 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SMRTFT NÜOBELL

Known as the “World’s Smartest Dumbbell,” NÜOBELL from SMRTFT is a Swedish-designed, all-in-one adjustable dumbbell that uses real, machined steel weight plates rather than a selector dial, creating a natural feel with optimum durability.

NÜOBELL give you the convenience of all-in-one adjustable 5-80lb dumbbells that are easy to use and have superior durability thanks to its machined steel weight plates. This innovative dumbbell set will quickly become your go to favorites. (Stand sold separately)

5-80 lbs per adjustable dumbbell Use the same set of weights for all of your muscle groups. Whether you need light weights for bent-over flys or heavy weights for squats, we have you covered with one set of weights. You can seamlessly flow from 5-80lbs with a simple turn of the wrist for your legs, back, chest, abs, shoulders, and arms.

The SMRTFT adjustable dumbbells are the most innovative ones on the market. Complete with a knurled handle and pancake-style disks, they feel like a heavy-duty barbell that you would find at most commercial weightlifting gyms.

AWARD-WINNING DESIGN FEATURED IN mens health, GQ, cnet, WSJ, Rated “Best Adjustable Dumbbell” (2022–2026) by Men’s Health & 1,900+ Owners.

SMRTFT NÜOBELL 80 — Premium 5–80 lb Adjustable Dumbbells

Transform Your Training

The SMRTFT NÜOBELL 80 delivers the power of an entire dumbbell rack in one sleek set. With a patented twist-lock mechanism, you can adjust instantly from 5 to 80 lbs across 16 settings. One compact pair replaces 16 traditional dumbbells, saving you space while keeping your workouts fast and fluid.

80 lb Adjustable Dumbbells with Instant Weight Selection

Rapid 5-second adjustments keep momentum during circuits, supersets, and drop sets.
Precise 5-lb increments (5–80 lbs) support progressive overload and smarter training.
Compact 17" length fits standard dumbbell racks and small home gyms.
Knurled 32mm handle provides a confident, barbell-style grip under load.
Precision-machined steel plates deliver durability and the solid feel of fixed dumbbells.

Technical Specifications

Weight Range: 5–80 lbs per dumbbell (5 lb increments)
Settings: 16 (5, 10, 15 … 75, 80 lbs)
Dimensions: 17" L × 7.5" W × 7.5" H
Handle: 32mm knurled aluminum, rust-resistant
Handle Length: 4.3" (110mm) grip zone
Materials: Precision-machined steel plates, reinforced polymer construction, aluminum V-connectors
Net Weight: 160 lbs per pair
Includes: 2 dumbbells, 2 portable cradles

Why Choose NÜOBELL 80?

Unlike cage-style adjustables or pin-selector systems, the patented twist-lock mechanism offers natural balance and instant weight changes. Compact yet powerful, the 80 lb set is the sweet spot for most lifters, providing enough range for strength gains while maintaining a smaller footprint than the 100 lb model.

Ideal for:

Home gym owners maximizing space efficiency
Lifters building strength up to 80 lbs per hand
Functional fitness and bodybuilding programs
Families or trainers supporting multiple fitness levels

Warranty & Protection

Every SMRTFT dumbbell and stand includes a 2-year limited warranty, covering:

Defects in materials and workmanship
Mechanical failures under normal residential use
Malfunctions in the adjustment or locking systems
Not covered: accidental damage, cosmetic wear, commercial or institutional use, or damage from impact with hard surfaces.

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