The Performance Tool mounted stone set is a versatile and essential addition to any rotary tool collection. With five 1/8" shank and five 1/4" shank stones included, you have a wide range of options to tackle various projects. Made from high-quality materials, these mounted stones are durable and built to withstand heavy use without chipping or breaking. With stones in assorted sizes, you can easily smooth rough edges or sharpen blades with precision. The shank design allows for quick and easy attachment to your rotary tool, making it effortless to start working on your project right away. The stones come packaged in a durable case, providing convenient storage and transport wherever you go. Whether you're a DIY enthusiast or a professional craftsman, the Performance Tool mounted stone set is an indispensable tool for any project.