Giant/Liv Intube Seat Clamp 1722-G19SC1-901 for Road Bike Models MY2019, MY2020, MY2021 Suitable for the following models: Giant MY2019: - all Defy Advanced & Advanced Pro GIANT MY2020: - Defy Advanced 1, 2, 3 - Defy Advanced Pro 0, 1, 2, 3 - Contend AR 1, 2, 3 - Contend SL 1, 2 - Contend SL 1 Disc, 2 Disc Liv MY2020: - Avail Advanced 1, 2, 3 - Avail Advanced Pro 1, 2 Giant MY2021: - Defy Advanced 1, 2, 3 - Defy Advanced Pro 0, 1, 2, 3 - Contend AR 1, 2, 3, 4 - Contend SL 1, 2 - Contend SL 1 Disc, 2 Disc Liv MY2021: - Avail Advanced 1, 2, 3 - Avail Advanced Pro 1, 2