Keep your lawn looking healthy and your lawnmower in top condition, by replacing the blade when it becomes dull and worn with this high-quality Wilko Replacement Lawnmower Blade. This 400mm mower blade is a direct replacement blade for the Wilko 98.5cc Hand Propelled Petrol Mower or the Wilko 118cc Self Propelled Petrol Mower.Over time, dirt and other garden debris can erode the blade, causing the metal to weaken and become paper thin. If you notice this, you should replace the blade immediately. Metal blades should be checked regularly for signs of wear, damage and balance. A blunt blade will harm the grass and an out of balance blade will harm the lawnmower, so ensure proper cutting performance from your lawnmower with this replacement 400mm mower blade.