Please pay attentionWe strongly recommend using metal blades, which cover 99 of usage scenarios and are safe and efficient. Plastic blades are prone to breakage, so we have provided an additional 5 metal blades. Please refer to the video for installation, and feel free to contact us if you have any questions. Easy to useCompared with other weed wacker, Aokia electric weed wacker is light in weight, only 3.72 lbs, making it easier to carry. It functions much quieter than traditional gaspowered grass trimmer resulting in happy neighbors. The weed trimmer is easy to operate, can be assembled and operated alone, making your gardening work more pleasurable. MultifunctionAokia cordless grass trimmer has 2 detachable extension pole that allows the weeder to be divided into 3 different lengths, 32 inches,48 inches and 65 inches. It can be used for different gardening needs such as lawn weeding, edger lawn, trimming bushes or flower beds and pruning tree branches. High PowerThis battery powered weed trimmer is equipped with a highperformance motor with a maximum speed of 10,000rpm and sharp blades. The string trimmer is equipped with a doubleswitch safety lock function, which can effectively avoid the danger caused by accidental activation. You need to hold down the lock button before holding down the trigger to start the weed mower, making your weeding safer and more reliable. Battery Operated The cordless grass cutter includes 12V 2000mah highcapacity rechargeable batteries.The batteries can be conveniently swapped out to give you continuous use of this tool. No more filling up a gaspowered weed wacker. No need to install wires also, making you get rid of the trouble of kinked wires.