flat base
Shades of Clay is Your Source for flat base and more...
Earring Base 6mm (144 pcs) Stainless Steel
6 mm Flat Post - Stainless Steel Studs , Round Earring Base-Pack of 144- (Stabilizer Clutches sold separately)
These surgical steel bases can be glued onto your baked polymer clay earrings. They can be embedded for added strength and durability. Or, attach object to base with strong glue or epoxy.