This genuine Hayter blade will fit the following Hayter Harrier 48 models

• 490D / 490E / 490F / 490G / 490H / 490J
• 491D / 491E / 491F / 491G / 491H / 491J
• 493D / 493E / 493F / 493G / 493H / 493J
• 496D / 496E / 496F / 496G / 496H / 496J

You can tell which model you have by looking on the serial label which is normally located on the deck of the mower.
Delivery is free of charge on this item.