This Bosch PRO Reducing Ring features an outer diameter of 20mm and an inner diameter of 16mm, with a thickness of 0.8mm, making it perfectly suited for adapting PRO Circular Saw Blades to saws with a 16mm arbor. The 16mm inner bore is a standard metric arbor size common across many European circular saw models, and this reducing ring provides the precise fit needed for safe and accurate cutting. Built to Bosch PRO standards, this reducing ring is precision-manufactured to sit flush within the blade's arbor hole, ensuring a stable, vibration-resistant blade mounting every time. Features and Benefits: • Reduces the arbor hole of PRO Circular Saw Blades to fit a 16mm arbor • Precision-engineered for a secure, stable blade fit • Helps maintain cutting accuracy and minimise vibration • Quick and straightforward to install on site Specifications: Outer Diameter: 20mm Inner Diameter: 16mm Thickness: 0.8mm