For Circular Saw Blade Adapter Set (4Pcs) for Blade Diameter ConversionFeatures: *Used for saw blade for grinder from different angle. *Appropriate for circular saw blades. *Package Include 4pcs Saw Blade Bush,Size includes 20-16mm, 22-16mm, 22-20mm, 22-25.4mm. * and long service life. Specifications: Product name: Circular Saw Ring Material: Metal Size: (Approx. ) Internal diameter:16mm External diameter:20mm Internal diameter:16mm External diameter:22mm Internal diameter:20mm External diameter:22mm Internal diameter:22mm External diameter:25.4mm Color: Silver Suitable for: Circular Saw Blades Quantity: 4 Pcs/Set Package Included: 4 × Circular Saw Ring Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data. For Circular Saw Blade Adapter Set (4Pcs) for Blade Diameter Conversion Safety compliance to ensure product safety Diversity and professionalism to meet your diverse needs High quality and durability, produced with premium materials and advanced technology Products are environmentally friendly and sustainable, focusing on green and sustainable development