Description: 3pcs Screw Remover Broken Rusted Stripped Screw and Bolt Remover Extractor. Material: carbon steel. Heat treated carbon steel for strength,Suitable for all hand and power drills. Contains three popular sizes of countersink bits :12mm, 16mm, 19mm. Handle: Round shank ,Do not use the product for metalworking. Specification: Material: Carbon Steel Color: As picture show Package Includes: 1 Set Chamfer Wood Tool Set(3 pieces) Note: Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above