A fletching device (6) which is removably mountable on an arrow shaft, the fletching device comprising a body (60) which is engageable with an arrow shaft, and at least two vanes (66) attached to the body. The body is reversibly deformable such that a friction fit is provided between the body and an arrow shaft when the body is engaged with an arrow shaft. This allows the device to be easily and quickly removed and replaced on an arrow shaft.