40 PCS End Mills CNC Router Bits 低利润 the filament can be cooled

the filament can be cooled quickly after extrusion so that the model is not prone to deformation or wire drawing

Free useful accessories: a free soft ruler to measure the size of object

Best Performance and Most Cost-efficient: Powerful

Fast Heat Dissipation: The size of the honeycomb is scientifically calculated

40 PCS End Mills CNC Router Bits 低利润 the filament can be cooledGreat cutting and milling performance. 4 Type Each 10Pcs, satisfying your different needs. high hardness, high wear resistance, clean surface, neat, no glitches. Wide Application: PCB, SMT, CNC, Mold, plastic fiber, carbon fiber, hard wood, printed circuit board, aluminum and other precision parts processing. Shank DiameterSD: 3. 175mm 0. 8~3. 175mm