Small in size and easy to carry, you can take it with you to anywhere you want to use. Features: Suitable for thread conversion of different threaded angle grinders. Enhance the operability of the machine, convenient for the corners, deep processing and polishing Suitable for polishing pads backer plate, drill bits, cutting disc, saw blade, polishing machine, other compatible tools etc. Easy installation and simple operation, no need too much professional skills to complete the installation.