,fast ,smooth and long lifespan 2,Stable quality for long term 3,free shipping 4,technology for bit using by cnc engraver SpecificationsSELF-LOCKING, SUPPORTING CONSTRUCTION PARTSSELF-LOCKING, SUPPORTING CONSTRUCTION PARTSApplication:For cutting self-locking finger joints for board and strip production.Material:Soft and hard wood.Machine:Finger joint machine with or without cut-off device.Cutting ...