For $1.00 EACH? If the deal seems too good to be true, it is.
Delivery from Hong Kong by the end August if not mid-September.
These probably cut a clearance hole, (they don't say), not the drag fit which is what you need. Do that, and you've spoiled not only the link but the lever and the breechblock. Bad risk.
BTW a cute trick that these ultra-cheap Chinese evilBay sellers are known for is selling reject merchandise to gullible Americans. Learned that the hard way quite a few years ago now. Never again.
Are they collecting your Credit Card information for later use? That's too often the purpose behind these ultra-cheap deals. Absolutely no way they're not taking a loss on these if they're offering free shipping.
Nothing personal, Traffer, but I would not touch this with a barge pole.