This is a SHUBB S1 capo made of stainless steel. I had forgotten I bought this and it has been in storage. There is no sign of deterioration in the rubber. I opened it for the purpose of taking photos. It seems to be a model that is currently difficult to obtain new. New, unused item - Brand: SHUBB - Model: S1 - Type: Capo - Material: Stainless steel - Suitable for: Acoustic guitar Thank you for looking.