Features: Woodworking popular spiral helical-planer cutter head and woodworking lathe-turning tools 10PCS/Set Most convenient-If one cutter edge dull or nicked, just turn it to another edge,and all are of the same sharpness Easy to operate, packed with a plastic- container for safe and easy storage Standard Size-12mm(length)x12mm(width)x1.5mm(thickness) square straight with 4 edges,30 degree cutting angle Made of solid carbide, extremely hard and durable,hold its edge up to 50times longer than standard blades,and polished to a finish for smoother cutting and longer tool life Specifications: Fit ForWoodWorking Popular Spiral Helical Planer Cutter Head and Woodworking Lathe-Turning Tools Type: Woodworking Power Tool or Woodworking lathe-Turning Tool Part Item: Reversible Planer Knives Cutter Inserts Blade Size:approx 12xmmx12mmx1.5mm/0.47x0.47x0.06in Thick-35° Shape: 4-Edges Straight Face, Square Application: hardwoods and softwood MDF,plywood, chipboard, particle board,etc. Package Include: 10PCS Carbide Inserts and 10pcs M4x9 Screws Package Includes: 10PCS x Carbide Inserts and 10pcs M4x9 Screws note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.