The OX ultimate karbite is a multi-purpose saw blade made up of carbide clusters welded to a reduced noise and vibration center plate which can cut equally well in either direction and can rip through many products which cannot be cut using a diamond blade or chainsaw. For a blade that?s got some bite, the karbite gives a remarkably even cut in many products from time to plastic, tree roots to rubber and is not put off by nails or screws! As it is bi-directional, the karbite does not need to be sharpened, simply turn it round and carry on cutting. Can be used with gas cut-off saws and angle grinders.