Can’t help directly but just bought another Niggeloh neoprene (with swivels) for myself off of E-Bay for a very good price - might be worth a browse on there?
Love the Niggeloh’s but had a poor experience with the claw - mine essentially cracked/disintegrated in less than a few months of normal use! Might just have had a bad one but wouldn’t personally use again despite positive reviews.
Good luck with the hunt