includes the assessment of a device per se. To facilitate my pedicure with my husband purchased the product and felt spontaneously very useful and helpful. Hornhauthobel with the sharp blade finally ade. That one needs replacement roles is as clear as daylight. Meanwhile, yet another device acquired to work in exchange (engine Scania). The "roles" even I wash after use in mild soap solution by hand, rinse and let dry. Allow to briefly surface disinfectant spray over it to dry, and "ready for action".