Embodiments presented herein relate to acrylamide derivatives and uses thereof. The collet has a plurality of axial slits therein that divide the collet into sections and a tapered axially extending bore that tapers outwardly as it extends axially outwardly. The wireless device transmits a random access preamble on the selected random access process from the one subframe to a base station. Drive to the pick roller is disabled by the pick roller clutch when the leading edge of the document reaches a gap control sensor, downstream of the rollers. The TGC unit controls the plurality of light sources independently and simultaneously.