Machinist Tools LATHE MILL Machinist Ultra Think Parallel Blocks in Hard Case Note: we are wholesaler/liquidators not machinists. I know nothing about these. What you see in the photos is what you will receive. They each measure approximately 6 inches long and there are 20 in the case. *** PLEASE NOTE! Our store buys and sells a variety of new and used electronics, instruments, tools, antiques and many other items. We do our absolute best to thoroughly test all our merchandise and accurately describe and depict any flaw or defect we find. If you come across an issue that we have overlooked, please contact us - we will be happy to work with you to resolve the issue. *** We take our reputation seriously, we buy and sell online, so we understand the value of trust! If you are unsatisfied with your order, please contact us and we will work with you to resolve it to your satisfaction! Thanks for looking at our listing and supporting our small family business! SHELF: 33