Extreme Engineering Match Disconnector Positive Reset for Fast Double Taps. Manufactured from the same tough steel alloy as the Extreme Engineering Hammers. Proper length above and below pivot hole to provide correct function with light trigger pulls and to reduce drag on the slide. CNC machined and heat treated to 42-44 Rockwell C for unlimited life expectancy. Excellent for match and tactical pistols. Fits all 1911/2011 formats.