I was always skeptical about 3D printing plastic parts. However, after visiting ''thingiverse'' and reading some of the comments, I thought to give it a try. These were my first 3D printed parts that I ordered after dowloading from https://www.thingiverse.com/make:545561 . It took about a week for manufacturing & delivery. The packaging and quality of the parts is great. These fit my Sony MDR-1000X perfectly. I will definitely order more in future. I am so happy. Thanks Mark. Have a good weekend.