These are Emmaline Bags swivel snap hooks for your bags and handbags. For a more delicate look, try the wristlet/strap hooks on small clutch bags and wallets.
Measurements:
1/2 (12 mm) wide (inside measurement of eye/for 1/2 wide strap)
(1 1/2) 38 mm long
Overall outside width 5/8 (15 mm)
Sold in packs of 2.