I have some disappointing news. Wolff's supplier for the LF Series Practice Beauty Shears has dried up. Wolff does have other practice shears they've replaced the LF Series Shears with for now to be sent out with machines, but they are no where near the quality of the old ones.
Wolff is on the hunt to find a suitable replacement if they can. I'll let you know what we find in the future, but for now; Wolff Practice Shears should not be sold as usable shears to your customers.