I paid for AliExpress Standard Shipping, and the Seller honored the terms of sale and sent the items using AliExpress Standard Shipping with a tracking number starting with "6077" and NOT Singapore Post with a tracking number ending in SG. I did not receive notice from the South Korean Post prior to delivery, which is unsual--I think they are up to something. It took 13 days to South Korea. Local shipping companies take up to 4 days for delivering items purchased in South Korea, so there isn't much difference. These metal products are heavy and therefore shipping charges are more expensive, but the Seller nevertheless honored the terms of the purchase. Other sellers will haggle and tell lies about this and that, as we already know. The product is in excellent working order. Good communication also. I highly recommend this Seller.
Just what I wanted. Perfect size, knurled finish is just right. It did take 6 weeks to deliver, but seeing that I was not able to find these from anyone else in the world, no complaints. I will try to send some other sailors who likely have a similar need, to you.