with a preferred embodiment of the present invention for use with the same shuttle type activation station and linear knitting machine with which the prior art system shown in fig1 is used selector 50 preferably comprises a selector frame not shown and an array of n selector feet 52 n is preferably on the order of 10 fig3 is shown with n 10 selector feet 52 are preferably mounted in a row in the selector frame so that selector feet 52 are preferably parallel to each other and equally spaced one from the other each selector foot 52 is mounted to the frame by means of a pin 54 around which selector foot 52 is rotatable selector foot 52 is preferably formed with or mounted with a friction coupling surface 56 friction coupling surface 56 is preferably a circularly cylindrical surface with axis congruent with the axis of pin 54 friction coupling surface 56 couples selector foot 52 to a piezoelectric motor 58 which is mounted to the selector frame by methods known in the art the space between adjacent selector feet 52 is equal to the space between adjacent rows of activation fins 24 fig4 a 4c show the details of construction and operation of a selector foot 52 referring to.