Would these work? https://www.amazon.com/Titoe-Cupping-Vacuum-Machine-Accessories/dp/B0BX8RCVDT
They claim 22-23cm height
These are the silicone rings to help pad the cups https://www.amazon.com/Cupping-Therapy-Machine-Accessories-Silicone/dp/B0B5ZT2CCX
They claim 22-23cm height
These are the silicone rings to help pad the cups https://www.amazon.com/Cupping-Therapy-Machine-Accessories-Silicone/dp/B0B5ZT2CCX