These were on my Amazon Wish List for Christmas and someone bought them for me. Unfortunately, I miscounted the number of splines so I received the wrong ones the first time and had to return and reorder. This time I got the correct 18 spline knobs that my guitar needs, and they are as good quality as the original factory knobs.Since my guitar has three knobs it took two packs because they only come two in a pack. The first knob I put on this time was way too loose, and my heart sank because I really like them. Luckily, the other three fit! BUT I was hoping to have a spare and, after all, the person who bought them for me DID pay for four. Maybe the seller will see this review and contact me. I’m happy to return the one misfit knob!