Chuck: ROHM. Specification: 1/32 - 3/8 ROHM 1 - 10 L 3/8-24 S14 W. Germany. Drill: Black & Decker. Rated Speed : 900 RPM + 2400 RPM. There is very little tone difference between the High and Low speed settings, when the Drill is running freely with the trigger fully depressed.
