I think it may behoove you to find the same type of instrument and much cheaper in your garage probably holding something to a hook to the wall or rafters. As a matter of fact, you could find something similar in your farm and ranch store or auto parts store, dear. Lots cheaper. Just saying.
A cheap version (less than 25 USD incl. shipping) is available here: https://m.aliexpress.com/item/4000905680347.html?pid=808_0000_0101&spm=a2g0n.search-amp.list.4000905680347&aff_trace_key=&aff_platform=msite&m_page_id=6937amp-PuQZ8PoTg6VlYlW101KjvQ1591012373806&browser_id=8162bbf543c940899f9250d3af8869c9&is_c=Y
the prices are very affordable here.https://www.aliexpress.com/item/32956806381.html?spm=a2g0o.productlist.0.0.5c5017f9ZyHZMx&algo_pvid=cfb9ad79-8b83-42b1-ae02-796a8c273cf2&algo_expid=cfb9ad79-8b83-42b1-ae02-796a8c273cf2-6&btsid=0ab6f83115910883619255144ec067&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
https://turkish.alibaba.com/product-detail/hook-self-massage-tool-back-s-shaped-shoulder-back-neck-acupressure-massager-60855852862.html (can you send me bitcoin please)