These little rubber end caps might seem simple, but they solve so many problems around the house and workshop! This pack of 50 black vinyl caps fits perfectly on 1/8 inch (3mm) bolts, screws, rods, and other threaded parts. Made from high-quality rubber with good elasticity and insulation, these caps are sturdy enough to soften impacts but flexible enough to push on easily. They're perfect for covering sharp screw ends on furniture, protecting exposed threads from dust and rust, or preventing scratches from protruding metal parts. The soft, luster finish looks professional and provides good insulation for electrical projects. You can use them on round tubing, pipes, hooks, iron rods, cables, cylinders - basically anything with a 3mm-3.5mm diameter. They're great for fencing railing posts, steel gate rail stoppers, marine boat dock projects, or any situation where you need to protect against those annoying sharp points and burrs. Since you get 50 pieces, you can protect multiple projects or keep extras handy for future needs. Installation couldn't be simpler - just push them onto the ends, and they fit closely to the surface. It's amazing how such a small, inexpensive product can make your projects so much safer and more professional-looking!