This is the Therafin adaptor clamp used to bring Tash control hardware onto a mounting arm. If your client drives with a Tash joystick or runs switches through Tash gear, the clamp is the piece that holds it at the position you set.
Replacement matters here more than it looks. A clamp that has been loosened and retightened through years of transfers, transport and repositioning eventually stops holding its setting, and a control that drifts is a control the client cannot rely on. Swapping the clamp restores the hold without disturbing the rest of the mount.
It is a small part to keep in stock for a service supporting several powered chair users.
