If you're tired of noisy, vibrating equipment, these rubber isolators are absolute game-changers! The set of four M6 mounts features 20mm diameter rubber with 15mm height and 16mm long threaded studs that handle vibration damping like champs. The high-quality rubber has excellent elasticity that absorbs shocks and reduces noise transmission significantly. What's smart is the terminated metal stud design - the threads don't go all the way through, providing better isolation than through-bolt designs. The zinc-coated steel resists corrosion, making these suitable for both indoor and outdoor applications. Installation couldn't be simpler - just place your equipment over the studs and secure with M6 nuts. I've used these on my mini-split AC unit, generator, and water pump with dramatic noise reduction results. The anti-slip properties keep equipment stable while the vibration damping protects both the machine and whatever surface it's sitting on. Perfect for air conditioners, compressors, fitness equipment, small engines, and any machinery that creates annoying vibrations. The quality is industrial-grade at a very reasonable price point. After months of use in various conditions, they show no signs of deterioration or compression. If you want to quiet down your equipment and reduce wear from vibrations, these inexpensive isolators deliver professional results. Your ears (and your neighbors) will thank you!