Abstract: A flexible coupling used to transmit power between two shafts and comprising first and second transmission members and a flexible element between and interconnecting the transmission members. The first and second transmission members are each connectible to one of the shafts for rotation therewith and the flexible element is located relative to the transmission members by devices for transmitting power and by a location means for predetermining an amount of in-built deformation in the flexible element. In a specific embodiment, the flexible element consists of a pack of members held together as a sub-assembly by means of a sleeve and a collar press-fitted thereover. The flexible element sub-assembly is deformed to a predetermined amount by a spigot formed on the transmission members; the spigot is removed at two or more points remote from the connection locations on the transmission member to facilitate assembly of the coupling.