If you're working on lawn tractors, garage doors, or any machinery with 5/8-inch shafts, these solid steel shaft collars are exactly what you need. They come in a handy 4-pack, each collar made from high-quality carbon steel with a zinc plated coating that resists rust and corrosion. The dimensions are perfect for standard 5/8-inch applications - they have a 1-1/8 inch outer diameter and 1/2 inch width, with 5/16-18×1/4 set screws included to secure them tightly in place. What I really appreciate about these collars is how straightforward they are - no complicated installation, just slide them onto your shaft, tighten the set screw with an Allen wrench, and you're done. They're ideal for positioning components on shafts, acting as stops, or securing parts in place on various equipment. The zinc plating isn't just for looks - it provides solid protection against moisture and wear, so these collars will last through seasons of use on your outdoor equipment. Whether you're a DIY enthusiast maintaining your lawn tractor or a professional working on garage door systems, having a few of these on hand is always smart. They're simple, effective, and built to handle the demands of mechanical applications without breaking the bank. Keep a set in your toolbox - you'll be surprised how often you reach for them!