Abrasive waterproof paper is commonly used for wet sanding or polishing of surfaces, especially those that are sensitive to heat or where a fine surface finish is desired. It is often used in the automotive industry for sanding down primer coats, paint, or clear coat, as well as in woodworking, metalworking, and jewellery making. 

Diamond grinding wheels come in a variety of shapes, sizes, and grits, depending on the specific application. Some common shapes include cup wheels, dish wheels, and cylindrical wheels. The size of the wheel is typically determined by its diameter and thickness, which can range from a few inches to several feet in diameter and a few millimeters to several inches in thickness. The grit of the wheel, which refers to the size of the diamond particles used in the abrasive matrix, can also vary depending on the desired finish and material being worked on.

Flap wheels are typically used in metalworking, woodworking, and automotive industries, as well as for DIY and home improvement projects. They are versatile tools that can be used on a variety of surfaces, including metal, wood, plastics, and ceramics. They are commonly used for deburring, blending, cleaning, and finishing applications, as well as for removing rust, paint, and other surface coatings.

Machine taps are cutting tools used to create internal threads in a workpiece using a tapping machine or a CNC machine. They are commonly used in metalworking and other industrial applications to create threaded holes in materials such as steel, aluminum, and plastic.