1 Piece Balance Wheel Assembly. Also can be used for upgrade your watch to make it look unique. Third party products, not original.
Watch Balance Wheel with Hairspring Balance Splint for Miyota 8200 Movement E
Watch Balance Wheel with Hairspring Balance Splint For NH36/35 Movement F
Watch Movement Balance Wheel With Hairspring for ETA 2824-2 2834 2836 Movement
Mechanical Watch Replacement Balance Wheel With Hairspring For ETA 2671 Movement
Alloy Watch Movement Balance Wheel Hairspring For Seiko NH35 NH36 Movement Parts