ONIPAX Bike Seat Clamp for Standard Rail Saddles

1.Unscrew the 2 screws 2.Remove the 2 screws and the first mobile part of each end (they have a round - oval shape) 3.Place the adapter on rails, but make sure you start from the back of the saddle and push it in the front of the seat 4.Place back the 2 mobile parts, one by one, and screw back the screws making sure the adapter is the right position 5.Make sure the saddle angle position is correct - if not loosen the lateral screws and move the middle part of the adapter.'