All cutting wheels have a “best by” date. These best by dates are printed on the wheel to comply with the manufacturing regulation, EN12413:2007 A1. This date is generally printed on the centre ring and is usually set at a maximum three years from the manufacture of the disc. The reason that all bonded abrasives have an expiry date is because they are manufactured using an organic / natural resin. This resin can be impacted upon over time by natural and environmental conditions. Smith & ARROW rotate all of our bonded abrasive stock through a first-in first-out (FIFO) stock management system to ensure we are always selling the very best quality product we can to our customers.