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

I got a few to fit around a standard 1 dumbbell bar as weight collars. It fits perfectly on all the standard bars I have and tightens down tight and secure. I dont worry about scratching my dumbell bars but if I did theres other style shaft collars that screw around to tighten like pipe clamps.

I keep thee around great for many uses around the shop.

Delivered earlier than expected

This worked perfectly for me. I purchased a MERAX pulldown machine with standard (1 inch) weight bar. It came with an adapter to Olympic plates, but it meant I needed 2 spring clips: one for the 1”-2” adapter and one for the 2” plates. I used this as a semi-permanent collar. It holds the adapter and allows the Olympic weight to slide over. Perfect.

Well machined with a good finish and appropriate fit on the shaft.

These probably work great for 1 inch precision machined shafts, but they are too small for 1 inch round tube stock from Home Depot or Lowes.

Not sure about this one

These things are the best standard barbell collars that I have ever come across. They keep the weight extremely tight to the bar. The only issue is that there is a great deal of variation in the the diameter of standard barbells…so check first before ordering.

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

Inexpensive solution to threaded dumbbell handles that will not stay tight.