This is a set of 8 standard motors that come with Mini 4WD kits. 6 motors are in new condition, and 2 motors have been used for test runs. I'm not sure which motors were used for the test runs. Breakdown of the 8 motors: Single-shaft: 2 Double-shaft: 6 Please understand that this is a used item in the above condition before considering a purchase. I will carefully waterproof the package and ship it within 24 hours if possible. No need to ask for a comment before purchase; immediate purchase is prioritized regardless of the situation.