Sterling Silver Synthetic Czech Crystal Double Sided 360 Ball Stud Earrings Size: Bigger Ball- 16mm (0.63 in) Smaller Ball- 8mm (0.31 in) To get these earrings in single sided please search ASIN: B01AWP2VXQ on Amazon.com. Double Sided, Reversible - Can be worn on either side Light Weight: Not too heavy on the ears. Crafted from high quality materials.