Bubble Ballon Mini Stud Initial Letter Earring. Stainless steel 18K gold PVD waterproof hypoallergenic surgical steel post and butterfly backing 7mmx 7mm. This is for stacking The Bubble keeps this earring multi dimensional on the lobe as well as comfortable no sharp corners. Stainless steel makes this an everyday wear earring Comes carded as a pair. If you want mixed letters message us with the letters you want mixed together