Viking Drill and Tool 57990 SP-18TDM Type 21-UB Spiral Point Plug Style Magnum Super Premium Tap/Drill Set 18 pc. Set Premium Metric Tap and Dies Index High Speed Steel Spiral Point Spiral Point Plug Taps & HSS Drills Contains: HSS Spiral Point Taps & Drills Includes corresponding drill & tap Spiral Point Plug Style Magnum Super Premium Tap/Drill Set