This pick is manufactured from 0.015 thick Government Steel and is then molded into a blue tone plastic handle. This is petersons thinnest series of picks. They are useful for locks having very narrow key ways.
As they are somewhat thinner than the 0.018 picks, they are designed without the 0.018 series "Euro" shank reduction in order to maintain more strength while providing egress into very restrictive key ways.
Please note that as these picks are specially designed to provide access into narrow key ways where standard picks will not fit. This reduction in width comes at a logical cost in rigidity. Using these picks in wider key ways means you will lose the side to side lateral support for your pick that a narrow key way provides. If you are heavy handed you may find that these picks will try to flex sideways, or even bend under high pressure in locks with wide key ways.