I draw with mechanical pencils and over the past few years ended up using Bic’s .7 2H disposables, as it was what I saw at Staples. Even though with every minute of detailed work SNAP, a lead has broken it was tortured I accepted from my love of drawing. Accepting the problem I would pound on its end advancing the lead and move on. It had become a way of life. UNTIL NOW! I ended up discovering Paper Mate mechanical pencils about a month ago and they still snap now and then but something about this pencil makes the lead way stronger. The lead strokes are as fine as needed. The one down fall is the eraser, like a person running its first marathon it wears out fast(though it works great). But HEY who really cares I got tons of erasers.
The can be bought on Amazon in small to big packages, links below…