Range of processing ---- for cutting/engraving/carving/drilling/sculpturing/milling in materials like MDF, acrylic, density board, solid wood, wood, plastics, PVC, PVC expansion sheet, PP, ABS etc. High efficiency ---- these bits own edge which is for fast engraving that makes high efficiency; , high precision and not easy to break; it is smokeless and burr-free while processing cutting ---- the design of 1 flute, larger spiral chip space and mirror polishing of CNC Router Bit makes non-stick crumbs, smooth cutting and -removal Dimensions ---- shank diameter (SD): 1/8 inch (3.175mm); length (CEL)/flute length: 22mm; overall length (OAL): 38.5mm Color: Silver Stop immediately in the processing of anomalies when using the CNC Router Bit and find out the reason before reprocessing. Pay attention to the condition of wear and tear of the and timely check the CNC Router Bit. The bladed product is not for people under 18 years. The item is only used for industrial cutting not hazardous article. Number of flutes: 1 Material: tungsten steel Package Contents: 40*spiral upcut bits Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.