1、SELF LOCKING: The angle grinder quick release nut adopts special self locking design, for quick tightening and installation, no wrench required. 2、SPECIFICATIONS: The self locking pressure plate adopts M14 female thread, with 47mm diameter and 13.7mm thickness, has good compatibility. 3、ALLOY STEEL: The angle grinder pressure plate is made of excellent alloy steel, with high strength, good stability, and has a long service life. 4、MAIN PURPOSE: This flange nut is used to fix the wheel on the spindle, can also be used for diamond blades, grinding wheels, cutting wheels, etc. 5、EASY INSTALLATION: Includes 2pcs self locking pressure plates, compact and lightweight, easy to install and disassemble, suitable for most models.