Not all sellers separate parts with variations like these, might they have added a note to their terms ? I do but when I'm buying I like to check that the seller has at least [...] (36 months ago, May 15, 2021, to LEGO products)
Wishing you well, from a British hippie at heart. ✌️Peace man! :) In New Stores, Hippiebrick writes: [...] (36 months ago, May 14, 2021, to New Stores)
They are sprues, items are attached to these and removed when used. In Catalog Identification, Pluribus7158 writes: [...] (36 months ago, May 14, 2021, to Catalog Identification)