Just not attack me on my next question 
I know that there are different models for different machines.
I compared the drums DU-101 and DU-102.
The only difference I noticed was in part-
That part is on top of the drum, looking at him when he set-metallic tiles that serves to drum seated in the druminstallation blocks from the left and right sides.
It is with respect to physical parts.
Now I wonder what the difference is the specification of the drum, voltage, etc.
I know that there are different models for different machines.
I compared the drums DU-101 and DU-102.
The only difference I noticed was in part-
That part is on top of the drum, looking at him when he set-metallic tiles that serves to drum seated in the druminstallation blocks from the left and right sides.
It is with respect to physical parts.
Now I wonder what the difference is the specification of the drum, voltage, etc.
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