E-Rigging.com offers Jaw x Jaw Turnbuckles in Galvanized and Stainless Steel.
Here is the best use cases for the end fittings on this type of turnbuckle:
Turnbuckle Jaw End Fittings
Turnbuckle Jaw end fittings are versatile because they can be used in permanent and temporary applications. The pin can be removed and attached to other permanently closed end fittings like eyes formed in a wire rope, or a pad eye. The bolt and cotter supplied on some turnbuckle jaw fittings make it suitable for permanent rigging applications. If the load is removed from the jaw end fittings, the jaw will remain connected securely to the rigging assembly.