The Mono graph with a fixed 4 mm tip allows for precise work and reduces lead breakage. 
Inside the housing, the lead is guided by a high-quality, three-part brass chuck. 
Unlike conventional plastic chucks, the lead is held more stably and breaks less often. 
Equipped with an innovative "shake mechanism": shaking the pen advances the lead. 
Alternatively, the lead can be activated by pressing down the clip. 
By pushing up the clip, the lead is locked. Perfectly balanced housing ensures a comfortable writing experience even during extended use. With a refillable twist-out eraser. 
Replacement eraser: ER-MG. 
 Line width: 0.7 mm. Refillable
Height (mm): 15 Weight (g): 17
The Mono graph with a fixed 4 mm tip allows for precise work and reduces lead breakage. 
Inside the housing, the lead is guided by a high-quality, three-part brass chuck. 
Unlike conventional plastic chucks, the lead is held more stably and breaks less often. 
Equipped with an innovative "shake mechanism": shaking the pen advances the lead. 
Alternatively, the lead can be activated by pressing down the clip. 
By pushing up the clip, the lead is locked. Perfectly balanced housing ensures a comfortable writing experience even during extended use. With a refillable twist-out eraser. 
Replacement eraser: ER-MG. 
 Line width: 0.7 mm. Refillable
Height (mm): 15 Weight (g): 17