Metalworkers, welders, DIYers – this Faithfull jumbo flap disc is a beast for grinding and finishing. It's 100mm (4 inches) in diameter with a 16mm bore to fit standard angle grinders. The 'jumbo' part means it's packed with about 40% more abrasive material than a standard flap disc, so it lasts longer. It's made from zirconia alumina abrasive, which is tough and great for grinding metals (including stainless steel), wood, and plastic. The medium 60-grit is a versatile choice for removing material quickly while still leaving a decent finish. It's resin bonded for strength and has a max speed rating of 15,300 RPM. Whether you're cleaning up welds, smoothing edges, or shaping metal, this is a heavy-duty, long-lasting disc that gets the job done. Always wear your safety gear when using it!