Round brads with 3mm diameter heads (also shown with 4mm Brads - Antique Gold, Copper & Pewter for scale).
About the same size as the Tim Holtz Mini Fasteners (with faux screw heads, also shown in one of the photos).
100 per package!
Design Team Member Shannon Cooper made For Want of Legs (see the wide photo below). More info in the blog and/or see the supply list.