Multi-Function Heavy-Duty Conversion Adapter This multi-function heavy-duty conversion adapter features a standard 5/8"-11 thread for quick and easy installation. It allows an angle grinder to be converted into a die grinder, expanding its use for grinding, deburring, engraving, and polishing applications. The adapter is made from premium stainless steel, providing excellent wear resistance and corrosion resistance for extended service life. The solid construction supports stable performance during high-speed operation. The kit includes 1/4" and 1/8" high-precision collets, designed to withstand increased working pressure and help maintain consistent performance during detailed and efficient grinding and polishing tasks. This set comes with one quick-change disc backing pad and five types of high-quality sanding and polishing discs in different hardness levels, ranging from wool polishing discs to non-woven surface conditioning discs. These attachments are suitable for a variety of surface finishing needs. The twist-on quick-change design allows for fast attachment and removal, improving overall work efficiency. Compatible with angle grinders, rotary tools, and electric drills, this adapter kit is widely used in automotive applications, metalworking, woodworking, and furniture fabrication, supporting tasks such as grinding, deburring, engraving, polishing, and general surface preparation.