Hey DIYers and workshop folks, these Othmro ball knobs are seriously handy little components! You get two of them in the pack, each with a 40mm diameter and that smooth rim design that feels great in your hand. The M12 female thread means they'll fit standard mounting setups perfectly. Made from Bakelite thermoset material, these things are tough - they've got excellent electrical insulation and resist oil, weak acids, alkalis, and most solvents. The molded-in insert is super secure, so you don't have to worry about them coming loose over time. Installation is a breeze - no special tools needed, just screw them on and you're good to go. They work great on control levers, push-pull rods, lawn mowers, exercise equipment, machinery, valves, spigots - basically anywhere you need a comfortable grip handle. The black finish gives them a professional look that'll make your projects look more polished. The spherical shape fits naturally in your palm, and the smooth surface won't irritate your hands during extended use. Whether you're building custom equipment, repairing machinery, or just need better handles for existing gear, these deliver reliable performance at a very reasonable price. The quality is noticeably better than cheap plastic knobs - you can feel the durability in the material and construction. Definitely worth having a couple of these around the workshop for those 'I need a better handle' moments!