Description 100 brand new and high quality Five Flute Chamfer Deburr Countersink 5 Flute Counter Sinks Carpentry Countersink Drill Bit SetSpecification Material High Carbon SteelSize 12mm 16mm 19mmShank diameter 6 35mm 1 4 inch hex shank Surface treatment blackening treatmentHeat treatment high frequency quenching enhance the hardnessApplicable scope suitable for wood plastic cutting chamfering etc Angle 90 degreeQuantity 3 pcsNOTE 1 Please allow 1 2mm differs due to manual measurement thanks 2 Due to the difference between different monitors the picture may not reflect the actual color of the item Please understand Thank you Package Included 3pc Countersink Drill BitsDetail Pictures