Sealey Tap & Die Set 32pc Split Dies Metric AK3015M3 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. PROFESSIONAL QUALITY M3 to M12 alloy steel tap and die set. METRIC SIZES Taps supplied in three types for each size, taper (starting),