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The 18" is long enough for most brush beating but my fav is the 14" Bolo machete it makes a good chopper and all purpose camp tool. With any Tramontina your gonna have to sharpen it yourself cause they dont come sharp so buy a mil bastard file and be prepared to work on it. I must ask what enviroment your intend to use it in, theres diffrent machetes that can handle diffrent chores. Trams are fine for grasses and vines and light brush but not the best at chopping on wood so alittle more info could help with suggestions.