Electricians and cable installers, this 30-pack of hold down clamps is exactly what you need for securing those wire mesh cable trays. Made from carbon steel Q235B with electrogalvanized finish, these clamps are built to last without rusting on you. They're designed specifically for basket cable trays with wire diameters between 4.0-6.0mm, which covers most standard applications. Each clamp measures 63x39x50mm with a 2-inch width and 1.2mm thickness - sturdy enough to handle the job but not overkill. The slot hole size is 31.5 x 8mm, perfect for 1/4 inch bolts to secure everything in place. Whether you're mounting trays on the ground or using stand-off brackets, these clamps provide that secure fastening that keeps your cable runs organized and protected. The 30-piece pack means you've got plenty for your current project with some extras for future jobs. At 23 grams each (695 grams total for the pack), they're substantial without being ridiculously heavy. If you're tired of cables shifting around or trays not staying put, these clamps are that simple solution that makes your installation look professional and, more importantly, keeps everything secure and safe.