I learned recently that Astrolab got bought, they made really excellent cables and connectors! Here are some 40 GHz "MiniBend" flexible low loss cables, with "K" connectors, rated to 40 GHz. I am selling these new old stock cables one at a time. These are 5 inches in length, part number K-5. These will bend in really tight radius without affecting their specs. The other types are shown to give you an idea of my stock. Mouser sells the 26 GHz cable of this type for 80.00 so this is less than half for a 40 GHz version. Have fun! 

Remember I combine items to save shipping so ask invoice for total on multiple items before you pay!