Black Friday: all 3 cupping handles $75 (was $150).

Gripzilla Cup Kit: 1.57, 2.36 and 3.15 in (40, 60 and 80 mm) cupping handles

Five-hole steel anchor bar and cable clip

Deadlifts, pull-ups, slopers, gi grips

Your grip quits before your back does

Your back can pull 405. Your hands let go at 315. These three cable handles try to pry your hand open every rep. Ten minutes after back day trains the grip your straps have been hiding. Bigger forearms come with it.

★★★★★40,000+ reviews across Gripzilla gear

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2.36 in (60 mm): bar strength. Deadlifts, pull-ups, rows, farmer's carries.

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3.15 in (80 mm): open-hand strength. Your hand can't close on it, like a sloper, a fat bar or a stone.

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1.57 in (40 mm): wrist control. Load the wrist heavy for gi grips, collar ties and holds that don't fold.

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Clips to the cable you already row on. No new machine, no chalk mess, no towel.

The Cup Kit: all 3 handles

Black Friday

$150.00

$75.00

Save $75

Half price: $25 a handle. All three cost less than two bought alone. Ends Cyber Monday, Nov 30.

30-day guarantee. Train with them for a month. If your grip isn't stronger, send them back.

Why is it called the Cup Kit?

Armwrestlers call it cupping: curling your wrist and fingers shut while something pries them open. It's the same hold that keeps a deadlift bar in your hands. If a set ever ended because your hands opened first, you need it.

Which size do I need?

Depends where your grip quits: 2.36 in for the bar, 3.15 in for the wall, 1.57 in for the mat. Start on the 2.36. All three cost $75, less than two bought alone.

What's in the box?

Three handles, each with its own heavy-duty straps and 5-hole steel anchor bar.

Independent review

Watch it on a real cable stack

Paul Linn runs all three handles on his home pulley. No edits, no script.

Your back can pull it. Your hands can't hold it.

Deadlifts end when the bar starts rolling out of your fingers. Pull-ups end when your fingers open, not when your lats are done. Farmer's carries end at the hands every single time.

So you strap up. The straps hold the bar, your back gets trained, and your grip gets a day off. Every week. The weak link stays weak because nothing ever loads it.

And it isn't only the fingers. Let your wrist bend back about 20 degrees and your grip drops to two-thirds to three-quarters of what it was (O'Driscoll, J Hand Surg 1992). A grip that lasts needs a wrist that stays put.

X-ray view: finger, wrist and forearm muscles working on the 40 mm cupping handle

Why straps, sleeves and towels didn't fix it

Here's what the usual fixes actually load:

Lifting straps

Trains: Your back, by holding the bar for you

Misses: Your grip. That's the point of them.

Fat grip sleeves

Trains: One thicker diameter

Misses: One thickness, and gravity only pulls one way

A towel around the bar

Trains: A thicker, messier grip

Misses: One angle, no way to load it up, and it slips

Dumbbell wrist curls

Trains: Wrist flexion, straight up

Misses: Gravity only pulls one way. A bar, a wall or an opponent pull from every angle.

None of them pull your hand open from the side, from below and from the front the way a real lift, a wall or an opponent does. A cable does.

How the handle works

1

Grab the cylinder. Fingers wrapped, wrist curled.

2

Clip the anchor bar to a cable. The same stack you row and pull on. Low pulley, high pulley or a band.

3

Pick your hole. The five-hole steel anchor bar moves the line of pull: toward the pinky side, the index side or dead center. Same weight, different fingers doing the work.

Strap on or strap off. Strap on, the wrist does the work and nothing slams if it fails. Strap off, your fingertips have to hold.

Hold it, curl it, or turn the wrist through its full range. Face the stack, turn sideways, turn around: every direction loads a different part of the forearm, and the cable never stops pulling.

Their sets end at the muscle now

"Did the thick one after deadlifts and my forearms were destroyed for 3 days. Best way possible. My grip didn't quit once the next week."

Jake R.

"Pull-ups used to end when my fingers opened. Now they end when my lats do."

Tom K.

"Did the 80 on the low pulley twice a week. Slopers that kept spitting me off feel holdable now."

Nina S.

"Gi grips used to die in round two. The 40 fixed my wrist first, the grips followed."

Andre M.

"Ten minutes after back day. Took the straps off my deadlifts three weeks in."

Chris B.

Where does your grip quit?

2.36 in (60 mm)

On the bar

Deadlifts, pull-ups, rows. The closest thing to a barbell, so the strength carries straight over.

3.15 in (80 mm)

On the wall

Climbing, slopers, hangs. On a 3-inch handle the force that closes your fingers drops by more than half (Edgren, Human Factors 2004), so open-hand strength is what gets trained.

1.57 in (40 mm)

On the mat

Grappling and wrist control. Your fingers wrap deep, so the wrist takes the heaviest load. The one for grips that don't open in round three.

Can't pick? You don't have to. All 3 for $75. One alone is $40.

X-ray view: finger, wrist and forearm muscles working on the 80 mm cupping handle

Every muscle below the elbow

A barbell trains your grip in one direction: closed, pulled down. A cable handle lets you load the forearm from every side:

Face the stack and it loads the wrist and finger flexors. Turn around and it loads the extensors. Turn sideways and rotate, and it loads the pronators and supinators. Ten minutes covers all of it.

Thick handles raise forearm muscle activity when you pull and hold (Krings, JSCR 2021). That is the whole point of the 80.

Bigger forearms come with it. Train the hand under load twice a week and the forearms finally do the work the straps were doing for them.

The Cup Kit vs the usual fixes

The Cup Kit

Lifting straps

Fat grip sleeves

Spring gripper

Trains your grip instead of hiding it

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Pulls the hand open from any angle

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Three thicknesses

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Loads the wrist, not just the fingers

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partly

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Works on the cable you already use

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n/a

Who it's for

Lifters

Deadlifts, pull-ups, rows and carries that end at your back, not your hands.

Climbers

Crimp and sloper strength from the same flexors, trained when you can't get to the wall.

Grapplers

BJJ, judo and wrestling grips that don't open up in round three.

Strongman

Thick-handle strength for axles, stones and fat bars.

Anyone whose grip quits first

If your hands give out before the muscle you came to train, start here.

Buying a gift

No guessing which size, the set is all three.

A stronger grip in 30 days, or send them back

Train with them for 30 days. If your grip isn't stronger, send them back for a refund.

FAQ

Do I need a cable machine?

Any cable stack, low pulley, resistance band or loading pin works.

Should I stop using lifting straps?

No. Keep them for your heaviest back sets. Use the handles for ten minutes after, so your grip catches up.

How often should I train with them?

Two short sessions a week after back or pull day is plenty to start.

How heavy can I go?

CNC aluminum handles, heavy-duty straps and a steel anchor bar. Built for cable stack loads. Start lighter than you think: the angle changes everything.

Can I buy one handle?

Yes, $40 each. Two bought alone cost $80. All three are $75 until Cyber Monday, Nov 30.

Will my forearms get bigger?

Yes. Load your hand twice a week and your forearms finally get the work your straps were taking. The grip comes first. The size follows.