This tool is available nowhere else. It is a multi-use tool. One end is an enshin (round needle_ and the other is a fan-shaped Yoneyama zanshin. With two tools in one, it is a bargain. It is easier for a large hand to use for stroking than the smaller Yoneyama zanshin. (The name comes from combining enshin with the Z from zanshin--- Z + enshin = zenshin)

Blue Poppy Institute: Youtube Gentle Tool series - Zenshin