TS1
Kemper TS1 · The larger throwing stick · Shapes the inside of a narrow form · For bottles and closed shapes
$0
Kemper's larger throwing stick, for shaping the inside of a form your hand cannot reach into.
TS1 is Kemper's larger throwing stick. The purpose is reach. Once a form narrows at the shoulder your hand stops being able to get to the inside wall, and a throwing stick carries the pressure in for you - it is how bottles and narrow-necked forms get their shape from the inside rather than being thrown open and closed later.