Do not buy these they are awful!! Does not fit anything. Sometimes they are returns that are stripped. When you get a replacement they send you back the same ones. Or one would be missing. Size doesn’t even matter. One would be loose one wouldn’t even go on.

these become loose all the time, how to fix?

Personally, I just figured you needed to check them/tighten them every time you picked up the bar, but I suppose that if you bought an extra pair and added a pair to the outside of the set you have, that would slow down if not reduce the amount they loosen?

is the product made of iron?

The product is made of metal. I am unable to say if it is iron or some other alloy.

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Lamoutor 2Pcs Anti-Slip Hex Nut 25mm Collar Screw for Barbell Dumbbell Weight Lifting (Silver 2pcs)

Lamoutor 2Pcs Anti-Slip Hex Nut 25mm Collar Screw for Barbell Dumbbell Weight Lifting (Silver 2pcs)

Product ID: 359842398

Details

Brand
Lamoutor
Colour
Silver 2pcs
Item weight
0.31 Kilograms
Material
Alloy Steel
Special features
No-Roll Head

🔇Silent anti-skid gasket

🔩Robust alloy steel build

🛡️Anti-slip hex nut design

$34.87

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔩 Lock in your lift, silence the noise, and own your workout.

BUILT TO LAST - Durable alloy steel construction ensures long-term reliability under heavy lifting.
SILENT STRENGTH - Anti-skid gasket reduces noise, keeping your gym vibe focused and professional.
SECURE YOUR GAINS - Fits all 25mm standard barbells & dumbbells for a flawless workout.
SLEEK SILVER STYLE - Modern silver finish that complements your premium gym setup.
EFFORTLESS ADJUSTMENT - Spinlock collars with no-roll head for quick, secure weight changes.

The Lamoutor 2Pcs Anti-Slip Hex Nut collars are precision-engineered spinlock collars made from durable alloy steel, designed to fit all 25mm standard weightlifting bars. Featuring an anti-slip hex nut and silent gasket, they ensure secure, noise-free workouts. Ideal as reliable replacements or upgrades for your dumbbell and barbell setup.

Specifications

ASIN	B08H8Q763L
Best Sellers Rank	#137,469 in Sporting Goods ( See Top 100 in Sporting Goods ) #90 in Exercise Collars
Brand	Lamoutor
Brand Name	Lamoutor
Color	Silver 2pcs
Colour	Silver 2pcs
Customer Reviews	4.0 out of 5 stars 526 Reviews
Handle Diameter	25 millimeters
Handle Material	Alloy Steel
Item Weight	0.31 Kilograms
Item weight	0.31 Kilograms
Manufacturer	Lamoutor
Material	Alloy Steel
Number of Items	2
Number of Pieces	2
Other Special Features of the Product	No-Roll Head
Set Name	2-Piece Set
Special features	No-Roll Head
Style	Adjustable
Target Use Body Part	Whole Body
UPC	711731030098
Unit Count	1 Pack

Reviews

S**E

Returned

One threaded collar worked. The other had the wrong threading and would not go on my bar. Returned.

1.02.2024

S**B

Good product

Fitted perfectly. Good weight, well-made and like the rubber gasket on the end.

30.05.2026

L**E

Compra Segura

Son un poco mas delgadas de lo que esperaba pero al menos cumplen su función de manera adecuada

6.07.2025

J**A

excelente

Excelente

8.02.2023

T**S

Weight stoppers

Good product and durable for the price.

16.04.2026

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