The Bosch PRO Reducing Ring with a 20mm outer diameter and 16mm inner diameter is ideal for adapting circular saw blades with a 20mm arbor hole down to fit a 16mm saw spindle. At 1.5mm thick, this compact ring fits flush and securely, ensuring minimal play between blade and arbor. This is a particularly useful size for smaller circular saws and trim saws where a 16mm spindle is standard, allowing you to use a broader range of blade sizes without compromise. Features and Benefits: • Reduces 20mm blade arbor hole to 16mm spindle size • Precision fit minimises blade wobble for cleaner, safer cuts • Compatible with Bosch PRO Circular Saw Blades • Slim 1.5mm profile for a flush, secure installation Specifications: Outer Diameter: 20mm Inner Diameter: 16mm Thickness: 1.5mm