Deburring Tool Set Product Type Deburring Hand Tool Kit Surface Application Back Hole Edge Flat Surface Front Hole Edge Straight Edge Blade Material High Speed Steel Blade Finish Not Applicable Blade Trade Number UB38 UF1 US1 US2 US3 US4 Color Yellow Number of Blades 6 Holder Trade Letter Not Applicable Features Deburring Flat Surfaces Straight Hole and Back Hole Edges Blade Style Rotating Includes UF1 US1 US2 US3 and US4 Deburring Tools Series U