4pcs Spinlock Collars,1 Inch Standard Dumbbell Hex Nut Dumbbell Rod Nut Barbell Screw Collarfor Barbells Bars Training Sports(black)

The metal collars that came with my dumbbell handles would not stay locked. I ordered this second set due to online ratings. They are a firm fit and do not come loose. I only use up to 60 lbs per dumbbell, so I can't testify above that load. I've been using them for almost two years with no problems holding the weights securely.

Perfectly fit on my dumbells.

Fits my bar, just like my toys🤔😳. 4 stars because they don't stay in lock, the spin locks don't lock and simply spin around, but not a big deal.

We have the ELISON adjustable weight set - dumbbells, kettlebell, and barbell set. It comes with similar "locks" but seemed to be one short - if you wanted to use the set in more than one configuration. I ordered these and they not only work perfectly but seem to be more secure than the locks that came with the original sets. I notice the orange ones that ELISON provided seem to be less tight after a single rep - where these remain in place for the whole workout.

All four I received do not fit a standard 1" thread at all. They are so loose that you can pull them off without unthreading them. I tried them on a barbell and two dumbbells and the results were the same. Complete waste of time and money.

What you see is what you get and you can never go wrong with these

I have a York barbell set and these collars do not fit. The treading on the collars are totally wrong. I now have the option of paying more money at a machine shop to have the threading redone or just throw them away.

Easy to use. Simple. Fast delivery

Sorry to say that 3 out of 4 would not even thread onto the bar. Not worth it. Spend more and get quality product.