These ceramic-fibre-based file inserts are ideal for precise working of metal surfaces, even in hard-to-reach places such as curves or narrow parts. The inserts are long-lasting, can be used over their entire length and will not break or get clogged. The shape of the file can be adapted to meet all your needs, and its texture enables both frontal and lateral filing. Perfect for use on all materials with a hardness of less than HRC 57 (gold, silver, and so on).