Practices that dispense a high share of rimless and semi-rimless frames are the clearest fit. When a drilled lens works loose, the cause is usually a nut that has backed off, and a matching socket lets the dispenser secure it at the desk during the visit.
Glazing workshops mounting lenses into drilled frames can keep the set beside the drilling equipment. The final step of a rimless glaze is tightening the nuts, and five socket sizes cover a range of the fixings supplied with different frame ranges.
Frame collection appointments often end with a last check of every fixing. With nine drivers on a rotating stand, the dispenser can check hinge screws with the − and + drivers and the rimless nuts with the ◎ sockets without leaving the chair.
Multi-site groups can place a set at each branch, so every desk works from the same sizes and the same colour bands once a colour key is obtained from the seller.
Training optical assistants to handle rimless repairs is simpler with sockets that are labelled by size. Trainees learn to seat the socket fully across the flats, tighten gently and return the driver to its place on the stand.
Domiciliary services can carry individual drivers to care homes and private addresses, though the stand is made for a fixed bench.
The set is less suited to workshops whose frame brands use nut sizes outside 2.02 to 2.82 or specialist screw heads. Buyers needing documentation should request it, because any declaration of conformity or test report is issued by the manufacturer and provided by the seller.