Pentel Ain Leads Refill for Mechanical Pencil | 0.5 mm | Red Colour | 20 Pieces

I purchased this lead to be used exclusively with my new rOtring 600 Madder Red mechanical pencil (on sale for a great price at the time of this review). Unfortunately, this lead is rather light on paper and breaks fairly easily. You will likely need to write with your pencil held vertically to get the best use from this lead. It does what it is supposed to do, but do not expect this lead to be as dark as a typical HB lead. Perhaps it will grow on me as I use it more. It does disappoint me to write this because the other Pentel HB leads I use are fantastic. I guess the colored leads, especially being such a small diameter, just can't work quite as well.