The double fulte straight route bit set include 3 piece bits , with 8mm shank, 6mm diameter&12.7mm; diameter&16mm; diameterPremium stright router bits,C3 Micro-grain tungsten carbide cutters, solid hardened steel bodies with anti-kickback designAdvanced spray coating technology prevent the accumulation of wood chips, resin and asphalt, good wear resistance Double blade design,very sharp,can creat a smooth surface and enhance grooving and trimming performance,reducing processing time Baorder strive to provide customer with best service, please contact us if you have any problem about the straight router bit set ,we will give you a satisfactory replyDouble Flute Straight Bit with 8mm Shank for Woodworking Trimming and CleaningFeatures:The double eged route bit is generally used for engraving machines for wood slotting, engraving, cutting, milling,trimming,cleaning bottom.etcSuitable for woods, MDF, laminate, particleboard, Plywood compact panel, Acrylic, and etc. Avoid cutting metal and