Engraving Stick – powered by 2 AA batteries. Interchangeable tips stored in the handle for engraving and small work, particularly useful where external power supply is not available. For tools shanks of 2.35 mm only, voltage 3 Vd.c. with two AA batteries, average power consumption app. 250 mA, 14.200 rev./min.(no-load operation) at 3 volt, weight 65 g, length 180 mm, dia. 28 mm.