Tamiya 3x5x3.2m pipe Black MB16 2pcs. 19803013-000
Tamiya 3x5x3.2m pipe Black MB16 2pcs. 19803013-000
This part is called the 3x5x3.5mm pipe in the manual of the M07, but the actual size is 3.2mm.
This is the correct part if that is the item you're looking for.