M3 to M12 alloy steel tap and die set. Taps supplied in three types for each size, taper (starting), second tap (intermediate) and plug (bottoming); matched by equivalent sized dies. Provides all functions required for a professional engineer. Includes Tap Wrench, Steel Die Handle, Screw Pitch Gauge, Screwdriver. Supplied in metal storage case. PROFESSIONAL QUALITY - M3 to M12 alloy steel tap and die set. METRIC SIZES - Taps supplied in three types for each size, taper (starting), second tap (intermediate) and plug (bottoming); matched by equivalent sized dies. CUT AND RENEW - Provides all functions required for a professional engineer. COMPREHENSIVE SET - Includes Tap Wrench, Steel Die Handle, Screw Pitch Gauge, Screwdriver. CONVENIENT STORAGE - Supplied in metal storage case.