A high performance file dedicated especially for plastics and hardened putty forming such as model building. It is a pitsaw file, convenient for processing of inverted R shapes and hole shapes. This is different from an ordinary file, in addition to adopting vixen file by precise cutting, a tip-breaker is added to enhance its ejection of shavings. This features cutting surfaces are smoothly finished as well as its high performance, moreover, since it is seldom clogged, the operation is speeded up, also can be used for woodworking.
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