These stainless fastener elements are a great investment for any industrial and scientific setting .they are incredibly durable and made to last ensuring a secure connection for all of your control cables. The 5mm x 50mm size is perfect for a variety of applications and the pricing can't be beat. The only downside is that they are not sold in larger quantities, so if you have a big project, you may need to stock up. OVERALL, these fastener elements are top-notch and a great addition to any power transmission product collection..