Alright DIYers and pros, listen up - these Anrik wedge anchors are the real deal for serious concrete projects. We're talking heavy-duty fastening that actually holds up. Each anchor measures 3/8 inch in diameter and 5 inches long, made from quality carbon steel with zinc plating to fight off rust. You get 20 pieces in the pack, which should cover most medium-sized jobs. Here's how they work: drill a 3/8 inch hole in concrete (NOT brick or block), hammer this bad boy in, then torque it to 20 ft/lbs. The wedge design expands as you tighten, creating this crazy strong hold that can handle serious pull-out forces. Thread length is 3-5/8 inches, and you need at least 1-3/4 inches embedded in the concrete for proper holding power. Perfect for securing storage racks, machinery, handrails, or pretty much anything that needs to stay put in concrete. The maximum fixture thickness it can handle is 3-1/4 inches. Whether you're building shelving in the garage, installing outdoor railings, or setting up workshop equipment, these anchors won't let you down. Much better than those cheap plastic anchors that fail when you need them most.