Climax Metal C-100 Shaft Collar, Zinc Plated Steel, Set Screw Style, One Piece, 1 Bore, 1-1/2 OD, 5/8 Wide, With 5/16-18 Set Screw

Use them to keep the wheels close together on the sides from my hand card

Used for a shop made spinning drum to drag the lawn and make it level.

I used it for my 1-in diameter dumbbell set. It worked perfectly. And you cant beat the price.

It is a good shaft lock

Worked as intended. Good machining. I also drilled and tapped some smaller set screws with no issues.

This items rusts very quickly. Other than that, its a nice piece that works well.

WTF Amazon? To be fair, this is a review of Amazon. This item, sure it was less than $2, but still, it should have been new. Plastic bag was torn open the item was dirty and used, that set screw needed to be replaced because the head was stripped out. Not worth my time replacing. I did receive another a few days earlier and it was fine.

Been using this for home gym barbells (10-15lb weight per side) as a more stable substitute for the elastic bands I previously used and have had no issues. The diameter was exactly as described and the collars have held with no loosening after a few dozen weightlifting sessions. Granted I keep the barbell level to the ground pretty much the majority of the time, the collars have not shifted any noticable amount after a fair amount of pressure on them over the past few weeks.

Not sure about this one

This is a well-made product at a great price and fits my motor shaft perfectly.