The link I used on Amazon is now showing unavailable.

https://www.amazon.com/gp/product/B06XCYVD1K/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

It was sold on Amazon for a while, the Sunnytech -- I think it's the same design as the Rotablade Tri, whilst being different enouugh not to be a clone, per se. It was $US35, and its very heavy stainless steel, The listing isn't available anymore, but here's the link: https://www.amazon.com/gp/product/B06XCYVD1K/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1