High speed 5000 rpm palm drill cuts cleanly though aluminum, composites, and even tough metals such as Titanium. Planetary gears for smooth operation. 1/4″ chuck. Only 6″ long. 90 psi pressure.High speed palm drill cuts cleanly though aluminum, composites, and even tough metals such as Titanium. 5000 RPM” 1/4″ (6.4 mm) Jacobs Chuck” 2-Speed (Low/High) Control” Ergonomic design with rubber grip” 9-3/4″ (248 mm) Overall Length” 1.25 lbs (.5 kg)”