Features: Easy Disassembly Design: Incorporates a hexagonal four-hole configuration for quick replacement or maintenance, enhancing efficiency and saving time. Quality Steel: Crafted from premium steel, offering excellent corrosion resistance and durability, suitable for diverse working conditions. Superior Hardness: Features a hardness of HRC58+2, with quenching and hardening processes, ensuring reliable performances under demanding tasks. Wide Tool Compatibility: Works for 100 Type angles Grinder and for open-end wrenches, adjustable wrenches, and pliers, meeting diverse needs for both professional and home users. Simple Installation: A straightforward and easy installation process, requiring no complex equipment or procedures, making it user-friendly even for first-time users. Specifications: Component: Steel Outer Diameter:Approx.30mm/1.18inch Inner Diameter:Approx.8.5mm/0.34in Option Type:1pair Pressure Plate(Upper +Lower ),2pair Pressure Plate(Upper +Lower); Hardness: HRC58+2 For 100 Type angles Grinder; Package Includes: Package A 1pair Pressure Plate(Upper +Lower ) Package B 2pair Pressure Plate(Upper +Lower ) note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.