Upgrade your machinery with durable high carbon steel shaft collars designed for strength and precision. Each collar is zinc plated to protect against corrosion, improve weldability, and extend service life—making them a reliable choice for industrial, automotive, agricultural, and hobby applications. Measuring 5/8" bore, 1 1/8" outside diameter, and 1/2" height, these collars deliver a secure hold and vibration-free performance on your shafts. The included flush socket cup-point set screws ensure a strong, professional lock that won't shift under heavy loads. From gearbox assemblies to machine tools, agricultural implements, and even hobby projects, these collars are versatile, dependable, and built to handle tough environments. Each set includes 4 shaft collars plus 2 spare screw and an allen key packaged with care for immediate use. With fine workmanship, heavy-duty carbon steel strength, and protective zinc coating, Splenor Tools delivers the quality and reliability you can trust.