This is the replacement attachment strap for any FlightCrew2, FlightCrew3, FlightCrew4, or FlightCrew5 Rollaboard.
FlightCrew5 rollaboards do not come with this style of attachment, they come with the J-hook style attachment.
Bag attachment is shown in the descriptive pictures. If your attachment does not look like that, then this strap will NOT fit. Not compatible with Travelpro FlightCrew5 Slim Rollaboard.