MutaiHandbag Hinges Clip 20PCS Metal Internal Flex Frames Kiss Clasp for Bag Coin Purse Handmade Wallet DIY Craft, 10cm

I used these for pouches and a glasses case. It works well. I am still impressed by the metal flex! Such a cool gadget! Great price for the value. Shipped promptly.

The package has 20 flex frames and only had 7 pins with them. Not very usable.