Pentel extra thin 0.2mm mechanical pencil is very tough for breaking lead because tip pipe is protecting thin lead to shape pipe rounded. It installs " orenz system" which tip pipe is slide in while writing to protect lead by breaking. The metal nib that the lead comes out of at the end actually retracts into the tip, this allows you to draw without any lead showing. The metal sheath to protect the led while writing works great. It's super rare to find 0.2mm mechanical pencils. 0.2mm graphite lets you make very small notes and drawings.