REV3 of the milled breadboard pins have a flat to stop them from rolling away. The pogo pin milling is so accurate that REV2 balances on the central ring and makes frequent escape attempts.
This small test run of REV3 goes in the next batch of Bus Pirate probe cable kits. A big batch The first batch Bus Pirate REV10 and Probe Cable kits are sold out, but back orders are enabled. The next batch stuff is at assembly/arriving now, and should ship out next week.