So first let me say that I really liked the product. I put them on my wheels yesterday and they need tightening but otherwise at least they feel good now but I'm glad I ordered 24 packs instead of 20 because I had 2 packs without thread. Nuts are just blanks, so to speak. I don't know if this is common but a friend bought a few and said he/she needs more because he/she also got a space.