I purchased the wrong size. I opened the package, but it's unused. I will wrap it in bubble wrap for shipping. This is a replacement blade for a Silky all-purpose saw with a 270mm blade length, offering high cutting performance with its 12th blade. - Brand: Silky - Model Number: No.363-27 - Blade Length: 270mm - Number of Blades: 12 blades per 30mm - Type: Replacement Blade Thank you for looking.