Pulley Keyway Key - Square Key Stock 60pc - Keyway Stock, Keyway Tension, Keyway Blank - Keyway Plastic Box - Flywheel Keys - Pump Shaft Key - 1/4 Key Stock - 3/16 key stock

It’s clearly labeled imperial but in fact it is metric. I paid extra for imperial.

Good quality and nice assortment. Nice case to hold all the sizes that are labeled by sizes

The 3/16 key was too large for the slot in the pulley, and I had to file it down until it fit. Instead of 0.188, it was 0.202. Upon checking all the other sizes in the set, I found they were wildly off their supposed dimensions, both too large and too small. Some of them were even square in cross section. I guess they would be good for small weights, but for pulley keys, they are junk.

To be fair the last line of the discerption tells you these are metric keys, NOT SAE. The box is labeled SAE with SAE dimensions. Keys are fair quality at best, box is junk. Evidence of spatulating from the manufacturing process. The keys were all mixed together when I got the box with two different sizes not having the right count. I guess they thought replacing one key with another size was OK and long as my total count was correct.

Case is broken and items are not organized

This contains a wide selection in reasonable lengths. I dont know what is usual. I trimmed one down and it fit well and replaces the original keyway which was damaged when the sprocket ripped open. The case opened inside the envelope during shipping. None were lost, but a piece of tape on the case would deliver a better product.

The key sheared in half and broke the flywheel. Absolute junk... theyre also metric not english

These are metric keys labeled with the nearest fractional inch size. They do not fit SAE keyways, and are over or under-sized by 10-50mils. Also, the larger keys (12mm) are not square as indicated, but rather rectangular keys measuring close to 8mm tall.

Decent set, and variety of keys.

I just assumed a key assortment would have the one size I needed. NOPE. So, now I have a bunch of different keys options and basically nothing to use them on. Note: None of these fit my lawn mower shaft, big wheeled trimmer shaft, or geared AC motor shaft which I think are all 5/8 shafts. Go figure.