as you know :) : Parrot clasp can use for braceletes and necklaces in gold or silver material.it's also known as a lobster hook, or lobster clasp and it is held closed by a spring...the lobster clasp is a kind of clasp that resembles a lobster claw,it also known as parrot clasp or lobster hook that connects the ends of a bracelet or any other jewelry piece...

this parrot clasp lock designed like Bird with estimately Similar :) Chain link model contains chain links and a lobster clasp that designed like birds head ..All dimensions are shown clearly in the images. it is useful for bracelet and necklace.All measurements are proportional. Contact me for any inquiries and modifications...To be scaled as you wish..

Important note:To connect the end link of the chain to the clasp, after casting you should add at least two extention (adjustment) jump rings with a minimum inner diameter of 3.5 mm.

for more:

https://www.cgtrader.com/3d-print-models/jewelry/bracelet/parrot-clasp-lock-designed-like-chain-link-3d-printable-model

https://www.cgtrader.com/3d-print-models/jewelry/bracelet/curb-chain-bracelet-5-model-with-fold-over-clasp