Sterling Silver Flower French Earring Hook with CZ. There's a Loop Behind the Star for Hanging Beads, Chains or Other Components.  

Size of Hook: Approx. 15 x 9mm 
Thickness of Hook:  Approx. 0.7mm (21 AWG)
 
Quantity: 2pcs (1 pair) per pack
Weight:  Approx.  0.81g per pack
 
Note:
The height of the earring hook is measured from the top of the hook (where it would go through the ear piercing) to the bottom of the loop that will hold the earring. 
 
The length is measured from the top of the hook to the end of the hook behind the ear piercing.