A replacement release knob with a rosette head, used where a belt or support needs to be undone by hand and a tool is not going to be on hand. The wide head gives a carer something to turn with wet or soapy fingers, which is why it turns up in bathroom and shower set-ups.
Stainless steel stands up to the water and the cleaning products that come with a wet area, so the fitting does not seize or corrode in place. It uses a standard M6 screw, so it swaps in wherever that thread is already used on the hardware.
Worth keeping a pack in the workshop drawer, since a stripped or missing knob usually takes a chair out of service until it is replaced.
