Ohto Super Promecha

OHTO Super Promecha .05mm: This pencil, this is the definition of frustration. This pencil is very heavy at the tip, the lead guard mechanism in the point, as well as the lead advancement size, make this pencil very interesting. They also include a cleaning rod for the lead if it gets stuck in the tip, don't lose that wire because you will use it all the time. This pencil works great until it doesn't, the lead sleeve and the advancement mechanism cause problems within the pencil and end up shaving off sections of the lead and they get stuck in the point, then when clearing it you must disassemble the entire from of the pencil because the clearing rod will just push the lead dust and tiny pieces it back into the mechanism.

My Super Promecha lasted about a year, before it snapped at the length adjustment area in the middle: To be clear, I don't think this is a normal occurrence, but since I keep my pencil in my backpack while using public transport, I think it broke from sitting with my backpack on. However, the thin piece of aluminum holding up essentially the whole pencil is suspect.

Bummer about the OHTO Super ProMecha. I'd also prefer a Platinum Pro Use 171 over pretty much anything present day OHTO (their best pencils were in the past).