PFERD POLIFAN®-Curve Radial Type Flap Disc - 4-1/2" x 5/8-11" Thread, 60 Grit Ceramic Oxide, Welding Accessory and Angle Grinder Attachment - For Steel and Stainless Steel (INOX) Grinding - Pack of 1 - Part 67258

Works like a champ. Threaded right on. Took a few passes to sharpen and done. Get one. Sharpen (not too much) your shovel while you’re at it.

I know Pherd is expensive. But these last and last. Will save your bacon on a finish weld that shows. Wanna make that weld that shows invisible. You need this.

Does its intended purpose.

The only problem with this product is that it's so good I too often use it on jobs that would be done with the much cheaper flap disk. I've solved this problem by buying a 2nd angle grinder do I can have one loaded with this product and the other with a cut-off wheel or flap wheel. BTW, getting this wheel of is difficult. I have to lock it in a vise and rotate the grinder. Problem solved by having the 2nd grinder.This product gets in places otherwise difficult to get to with standard flap wheel. I bought a 2 inch pneumatic angle grind to get into small places but use it less now that I have this product. It takes metal off quickly.This would be a "must have" for metal artists.

Did come with 5/8-11 thread as advertised, disk still worked fine but not what I ordered

This disc is great for radiusing welds. You'll spend more time using anything else.

I'm new to welding, this is the ultimate solution to furnish my ugly welding joints. Fast and easy, very good at handling the corners

I guess I didn’t pay attention to what it said. It looks like you bought two, but you only bought one deceptive advertisement.