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When purchasing lawn mower blades you want to select the best quality. This will increase the longevity of the blade as well as make your mower operate more effectively.      The best blades are constructed of stainless steel because it is durable. They also don't rust and look great on the lawn.      Straight Blades      If you're a homeowner with the standard lawn mower, the initial blades it came with are likely to be straight. They are great for side discharge and bagging, however they're not suited for mulching because of the lack of lift. Consider buying a high lift blade if you're searching for one that does both. They feature a curved rear edge that lifts clippings and work better when you have tall or thick grass.      The blade's upward-facing side has small ridges, or wings that create an air-vacuum to lift tested grass mower blades sharpener and create an accurate cut. This blade design is effective on dry or damp surfaces, however it's more efficient when cutting grass with a thicker thickness.      High-Lift Blades      It is easy to identify them by their distinctive upward curve at either end, high-lift blades create strong airflow that pushes clippings into the bag or the side chute. They also provide a more precise cutting for your lawn, and they can also help avoid clumping when cutting tall grass.      These mower blades require more power from your lawnmower to run because they create lots of suction as well as airflow. If you live in sandy soil, the dirt that they lift will quickly wear down your lawnmowers and result in premature wear.      They differ from other replacement blades in that they do not require you to take off the deck of the mower. Instead, you have to lift the mower deck to access bolts to secure the old blade. When replacing the mower's blade, make sure you are careful when working with the sharp edge. After you have removed the old blade, you can screw into the new one and check it for proper fit. After that, you're at the point of returning to work.      Multi-Purpose Blades      These blades are multi-functional and can be used to bag, shred, or side discharge grass clippings. They generate plenty of suction and airflow, and also help to cut the grass into small pieces which can be easily spread to the soil for nutrients.      However, this type of blade for lawn mowers is not suitable for mowing sandy terrains. The reason is that the airflow can pull sand, dust and other particles in the blade. This can result in the blade wearing more quickly.      The best method to find the appropriate lawn mower blades to fit your lawn mower is to examine the original blades included with your pusher or lawn tractor. Check for specifications such as the length of the blade, as well as the size of the center hole. Compare them to the specifications of the blades you wish to purchase. You can then be sure that the blades you buy work well and fit your mower. You might also want to think about the dimensions of the blade. The blade thickness is also crucial. But, it will be determined by the length of time you will use your lawnmowers and the thickness it is.      Mulching Blades      A mower blade with an impressive upward curve at the back edge is great for lawns where the clippings need to be mulched. These blades provide greater lift to propel the grass toward the deck, and then out of the discharge chute. They also improve the cut of thicker grasses. They may also require more engine power, which could cost you extra fuel.      The rear of a high-lift blade features broader "wind wings" to allow for better airflow around the clippings which can reduce suction and the amount dust that's emitted. These blades are great for riding mowers, and offer a more consistent cutting, and a smoother cut.      The installation of a mulching blade is a matter of ensuring it is compatible with your mower. Then, put a wood block between the blade and the bracket to keep it from bending as you tighten the nut. Then, using the ratchet that comes with the kit, along with washers you can connect the blade.