Designed in solid structure, the key duplicator Q29 is widely used for duplicating diversified serrated keys. The hand wheel type feeding device for the automatic key duplicating tool enables uniform cutting and effective protection to the cutters made of hard alloy. The patented technology for the key duplicator offers large distance between the two vises for the duplication of extra long keys. By virtue of the fine adjustment design for the guide pin of the key cutting machine, the automatic key duplicating equipment is capable of cutting keys with different cut depths, rapidly and precisely.