This set of tools is used; to repair glasses or watches. Delivered; with a box of 1000 small screws, a four-in-one screwdriver and a cleaning cloth repair your glasses and watches in a useful way. Repair tools include: screwdriver; flat head/phillips screwdriver/star screwdriver It can be used for repairing or tightening the screws of precision equipment such as eyeglasses, sunglasses, watches and mobile phones.