FitBeast Hand Grip Strengthener Workout Kit
- Grip Strengthener
- Plastic
- Black
- 15.2 ounces
- More reviewed than 88%
A low cost way to add grip and forearm work into spare minutes, with enough range in the two grippers to serve a beginner and someone already fairly strong.
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How it ranks among the 72 grip strengtheners we track
4.5โ across 4,847 Amazon ratings, Bayesian-smoothed toward the category average.
4,847 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
1,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 72 grip strengtheners we track - how the scorecard works ยท full grip strengtheners data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jul 5, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This five piece set pairs two adjustable hand grippers with a finger stretcher band, a grip ring and a stress ball, so both hands can train at once. Resistance on the grippers runs from 10 to 132 pounds, and each one has a rep counter built into the handle that clicks up automatically.
Reviewers who have owned the set for a year or more describe the parts as holding up under daily desk or couch use, a fair test for gear that gets picked up between calls and TV time. The counter and the plastic hinge are the weak points others flag, so treat the electronics as a nice extra rather than the reason to buy.
- 5 piece kit: 2 grippers, finger stretcher band, grip ring, stress ball
- Adjustable 10 to 132 lb resistance per gripper
- Built in rep counter resets after 99
- Soft ergonomic handles sized for most hands
Who it's for
Fits people who want to build grip strength during downtime rather than in a dedicated session, plus rock climbers, musicians and anyone doing rehab work who needs an adjustable, portable option. Less suited to lifters chasing serious one rep max grip gains, since the plastic build is not made for max effort abuse.
What buyers say
From Amazon customer reviews.
Owners who kept these at a desk or by the couch for a year or more report no failures and steady use during calls, reading or TV. The recurring complaint is build quality: the hinge can rack sideways instead of closing straight, and the rep counter misses squeezes once resistance climbs, which a few call out directly.
Strengths and trade-offs
Drawn from this product's published specifications.
- Two grippers let both hands train together
- Resistance adjusts from 10 to 132 pounds
- Held up to a year of regular use for some owners
- Soft ergonomic handle fits small and large hands
- Plastic hinge can misalign under firm squeezes
- Rep counter skips reps at higher resistance
- Included stretcher band and ball feel like filler to some buyers
Specifications
| Brand | FitBeast |
|---|---|
| Model | SJS-01 |
| Dimensions & fit | |
| Item Weight | 15.2 ounces |
| Item Dimensions L x W | 6.3 ร 4.5 inches |
| Construction & materials | |
| Material | Plastic |
| Color | Black |
| Warranty & support | |
| Tension Supported | Adjustable from 10 to 132 pounds |
| Other details | |
| Style | Adjustable Hand Grip with Counting Function |
| Part Number | SJS-01 |
| Item Shape | Variety |
Other FitBeast grip strengtheners
How it compares
This product against the closest alternatives we track in grip strengtheners.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| FitBeast Hand Grip Strengthener Workout KitThis product | 4.5 / 5 | 4,847 | 4.4 / 5 |
| KDG Hand Grip Strengthener 2 Pack Adjustable Resistance 10-130 lbs Forearm Exerciser๏ผGripโฆKDG | 4.4 / 5 | 15,031 | 4.5 / 5 |
| AIXPI Grip Strength TrainerAIXPI | 4.4 / 5 | 6,882 | 4.5 / 5 |
| DโAddario Varigrip Hand ExerciserDโAddario | 4.7 / 5 | 13,345 | 4.4 / 5 |
| Logest Metal Hand Grip Strengthener 100LB-350LB No Slip Heavy-Duty Grip Strengthener withโฆLogest | 4.6 / 5 | 1,800 | 4.4 / 5 |
Similar grip strengtheners from other brands
Questions about the FitBeast SJS-01
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the FitBeast gripper count reps accurately?
It tracks squeezes with a button in the handle, but owners at higher resistance settings report it can miss reps when the frame flexes under load.
What resistance range does the FitBeast hand grip cover?
Each of the two grippers adjusts from 10 to 132 pounds by turning the knob on the front, so it can suit someone starting out or already strong.
Is the FitBeast kit built to last?
Some owners report a year or more of regular use without breakage, though the hinge is plastic and can feel loose compared to metal grippers.