Euro Hook 0.020 Thick
Euro HOOK 0.020 Thick with metal handle
Thinner picks are often needed for narrow keyways or high/low pin stacks. They also work best with top of keyway tension. These 0.020 picks allow for slightly more working room than a standard pick. This extra room can allow for different angles of attack on the pins resulting in more picking possibilities. At .020 the picks lie between the traditional stiffness of a standard pick and the flexibility of a .015
Standard picks are 0.025 thick and their is nothing wrong with flexibility in a .015 pick. Often you want that flex to help position the pick.