Originally Posted by
70sSanO
That IS an interesting tool. That motivated me to look on ebay at the price of that item, and other masterlink installation pliers came up, and to my surprise they're quite inexpensive. I hadn't considered those pliers before as I assumed they'd be a lot more money. For 8 USD, it might be worth getting some.
There's also one that does both open and close for 13 USD:
https://www.ebay.com/itm/Bike-2in1-o...4AAOxyg6pRFvc3