Here's the foto. Split shackles are sister clips that quickly connect and un-connect. A snap shackle would also work but I didn't have any and they're a little pricey to buy. I'm just repurposing old sailing hardware that I happened to hang onto when I sold my sailboat. Hope it helps.
I should also mention that I added a homemade sink made from a stainless steel funnel. It doesn't take up nearly as much room as the stock sink FR started putting in. I used the old shower hose holder to fasten the sink drain line to the wall (1" plastic hose). I added a second shower head bracket that holds the shower head to squirt into the sink. Now we can wash our hands in the head after taking care of business, instead of where food is prepared. The metal hoses is well out of the way, snugly up against the wall.