Hand tool with pneumatic percussion

An at least partially striking hand tool with a pneumatic percussion 2 and a driven by an air spring 3 air piston 5, which beats on a guided in a guide tube 6 and two axial stops 9a, 9b limited axially movable striker 8, which forms a Ausenradialbund 11, of a coaxially outer thrust ring 12 axially on both sides, each with a Innenradialflanke 14 radially includes and the outer radial collar 11 axially movable freely, the outer diameter of the thrust ring 12 is smaller than the leading inner diameter of the guide tube 6 and that the mass ratio of the thrust ring 12 to the striker at least 0.25.