A super versatile, quality handpiece perfect for using mini bristle brushes or drill bits. It gives you superb pen like control and precision without the "in-your-hand" vibration of rotary hand tools. It has a 3 geared jaw #0 chuck that holds shanks and drill bits up to a 5/32" (4mm) diameter size. Approximately 5" long x 1" diameter. Weighs approximately 9 oz.