High efficiency. No need to pick up screws, move screws and put screws. Just need to aimed at the screw hole to fasten the screws. Automatic screw feeding, sorting and fastening with one-hand operation. Touch screen setting parameters, with screw counting and product counting function, can set the number of fastening screws according to the actual product, effectively avoiding screw missing fastening Automatic feeding with vibration and gravity type sensor,do not need air pressure feeding ,more simple and more convenient..syi