ITEM NAME:4pcs Titanium Coated Countersink Deburring Tool Set Metal Drill Bit Chamfer dsr# Product Description Description: Features 100% High quality and Brand new. Countersink and Debarring Tool Set This 4 piece Countersink and Deburring Tool Set is ideal for cutting through metal, wood and plastic quickly and easily Specification Material: High speed steel 4241 ,Titanium Coated Size(four type): 2-5mm,5-10mm, 10-15 mm, 15-20mm 2-5mm length: 4.5cm 5-10mm length: 4.7cm 10-15mm length: 6.2cm 15-20mm length: 8.2cm Included: 4 x Titanium Coated Countersink and Deburring Tool.Included:4 x Titanium Coated Countersink and Deburring Tool. Countersink and Debarring Tool Set. Material: High speed steel 4241 ,Titanium Coated. If item is defective after 3 months, you can still send it back to us.