@amitchell64
That looks like a spinlock XS clutch, which has been discontinued and superceded by the xas series.
There were, as I recall, two models in the xs series. There was one for 4 - 8 mm line (the XS0408. ) and another for 6 - 12 mm line, the (XS0612).
Do you know which size range you have? If a 1/2” line is too fat for the clutch, , it’s the 0408 mm model. 1/2” line is 12 mm.
Spinlock sells replacement parts for the xas. Some of them are which are compatible with the older xs series. For example, they sell replacement cams and strike plates (the gripping mechanism) for the xas which are compatible with the xs series.
Spinlock sell a spring and arm replacement kit for the xas, which has a street price of $14 and is available online. Call them and ask if it’s compatible with the xs clutch you have.
(401) 619-5200
Visit their website to find spare parts, but call tech support before buying anything.
https://www.spinlockusa.com
It would be wise to inspect the strike plate and cam for worn flat spots. And the side walls and handle for hairline cracks. If there is other damage, it might be wise (and cost effective) to replace the clutch with a new XAS. It’s a drop in replacement,with the same hole spacing.