WORKSITE 6 Piece HSS Twist Drill Bits Set. High-Speed Steel Bits Suitable For Cutting Stainless Steel, Iron Castings, Copper, Aluminum, And Other Soft Metals As Well As Plastics, Wood, Etc. The Drill Set Includes Drill Holders With Size Indexes And Is Packaged In A Small, Strong Package For Easy Storage And Sorting. WXDB06