These 2×5-pin housings work with Pololu’s wires with pre-crimped terminals to let you quickly make custom cables that mate with various 0.1"-spaced connectors, including male or female headers and solderless breadboards. They are sold in packs of 5.
Hey there, @gregh4786, and welcome to the forum. Glad to have you here.
The 2×5-pin connector housings (SKU: POLOLU-1913) are available to order with an estimated four-business-day lead time before dispatch. Delivery time after that depends on the shipping method selected at checkout.
Thinking of Andreas Spiess’s suggestions, I looked for 1x5 and 2x6 housings as possible work-arounds … and noticed how few of the housing sizes are currently in stock at Core. I do understand there won’t be much call for 2x20 or even the 1x10, and so a lead-time seems reasonable for them.
Looking closer, I see that Core do have stock for the 1x1 through 1x8 (which I assume are most common) except for 1x5, which I guess is just a temporary supply issue.