Model 28800 Double acting air impact marker is available in two standard rod styles with built-in stamp holders. All rods are keyed non-rotating to insure a consistent location of mark. The marker is capable of delivering a mark throughout it's 2-1/2"stroke range. The marker develops its maximum impact blow of 3 tons at 80psi with 2-1/4" stroke.
Custom made units with stroke lengths of 4", 6" and 12" are available.