These spacers are a superior quality non genuine replacement parts that have been manufactured by Ufixt The Spacers are used to adjust the cutting height of your lawnmower. Worn down spacers are likely to become difficult to manipulate or fit and may cause your lawnmower to drop. These spacers will ensure your mower is at the correct height and can help reduce weed growths, help maintain a healthy lawn root system and help prevent runoff of fertilisers and chemicals. Locate your required grass cutting length by removing or adding the Spacers between the mowers body and the blade.