Description : 4pcs / set straight router bit , wood milling cutter . Two flute carbide cutters with 8mm shank . Solid hardened steel cutters with anti - kickback design . Flush trim templates and patterns for a lot of projects . Ideal for plywood , wooden door frames , wooden window frames , wooden cabinets and boxes , solid wood , particle board etc . Specification : Shank diameter : approx . 8mm ( 5 / 16 & quot ;) Cutting Diameter : approx . 19 . 05mm ( 3 / 4 & quot ;) # 1 Size ( Cutting LengthxOverall Length ): approx . 20x65mm / 0 . 76x2 . 56 & quot ; # 2 Size ( Cutting LengthxOverall Length ): approx . 25x70mm / 0 . 98x2 . 7 & quot ; # 3 Size ( Cutting LengthxOverall Length ): approx . 38 . 1x83mm / 1 . 5x3 . 27 & quot ; # 4 Size ( Cutting LengthxOverall Length ): approx . 50 . 8x97mm / 2x3 . 82 & quot ; Package Includes : 4pcs / set 8mm Shank Straight Router Bit Note : Colors might be different due to different monitor display . Please allow slightly difference in size due to manual measurement .