Tooth-type magnetic extension, its they can show comb dentate arrangement, magnetic is extremely strong
Tooth-type magnetic extension, its they can show comb dentate arrangement, magnetic is extremely strong, can be in cooling liquid adsorption of ferromagnetic impurities in the tooth line on the surface, scraping by scraper, gradually accumulation pushed into a set unclean box, especially suitable for large flow, large particles of iron impurity, grinding coolant processing.