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When purchasing lawn mower blades, you want to go with the highest quality. This will ensure the durability of the blade, and help your mower work more effectively.      The best blades are constructed out of stainless steel as it is durable. They also don't rust easily and give off an attractive appearance for your lawn.      Straight Blades      If you're a homeowner using a standard lawn mower, the first blades it came with will likely be straight. They're great for side discharge and bagging, however, they're not ideal for mulching because of the low lift. If you want to use one that does both, you should consider purchasing a high-lift blade. They feature a curved edge that helps lift the clippings. These blades work better with tall or thick grass.      The blade's upper-facing side is adorned with small raised ridges or wings which create an air-vacuum to raise the grass to make a precise cut. This type of blade works well on both dry and damp surfaces, but is better at cutting grass that is thicker than standard lawn mower blades.      High-Lift Blades      High-lift blades are easily identified by the upward curve at either end. They create powerful airflow that pushes clips to the side chute or bag. They also provide a more precise cut for your yard, and they can also help avoid clumping when cutting tall grass.      The blades of these mowers require greater power from your lawnmowers to function because they produce lots of suction as well as airflow. If you have a sandy soil, the dust that they lift will quickly ruin your lawnmowers and lead to premature wear.      They differ from other blades for replacement in that they do not require you easy to use grass mower blade sharpeners remove the deck of the mower. Instead, you simply have to lift the mower deck in order to access bolts to secure the old blade. Be careful with the blade's sharp edge when replacing it. Install the new blade following removal of the previous one. Check it out for the right fit. Then you're at the point of returning to work.      Multi-Purpose Blades      They can be used as a complete set of blades for lawn mowers that allows you to bag, mulch or side discharge grass clippings. They create suction and airflow and can help cut the grass into small particles that can be spread out on the soil to provide nutrients.      This kind blade isn't suitable for cutting grass that is covered in sand. The large amount of airflow can draw in dust and sand onto the blade, which can cause the blade to wear out much faster.      The best way to find the correct lawn mower blades to fit your tractor is to check the original ones included with your lawn tractor. You should look for details like the length of blades, as well as the size center hole. Compare them to the specifications of the blades you wish to buy. This way, you will be able to be sure that the new blades fit the mower and operate correctly. You may also want to consider the thickness of the blade. The thinner blades are typically associated with a longer lifespan but this will depend on how frequently you use your mower and how thick the steel is.      Mulching Blades      A mower blade that has an impressive upward curve at the back is perfect for lawns where the clippings need to be mulched. These blades provide greater lift that can propel grass to the deck and away from the chute for discharge. These blades also help in the cutting process of more dense grasses. They could require more power from your engine which can cost you extra fuel.      The rear of a high-lift blade is adorned with broader "wind wings" to allow for better the flow of air over the clippings which can reduce suction and the amount dust released. These blades are ideal for riding mowers, and give a uniform cutting, and a smoother cut.      Installing a mulching knife requires that you first ensure that it's compatible with your mower. Place a block of wood between the bracket for mounting the blade and the blade in order to prevent it from breaking as you tighten the bolt. Then, you can put it on the blade using the washers and ratchets provided with the kit.