I didn't find this lead to be soft; I thought it to be fairly hard for an HB and
my lines were not as dark as what I'm used to. I had no problems with getting
this lead to write sharply from start to finish but I like a softer lead and
darker line. I was using this in my Uni Alpha Gel Slim Mechanical Pencil
(0.5mm) and the only issue I ran into was sometimes this lead wanted to 'slip
back' a little, which was frustrating. I'm not sure if it's because I should be
using a different refill, or if it's a defect with the pencil or with the lead.
It still works but the 'slip' was not something I experienced with the original
lead that my pencil arrived with. The case that this arrives in is really nice
and sleek - fits well in your pencil bag.
Going to order another refill but this time I'm going to go with an "H" to see
if it's more to my preference.