Saree Blouse stitching tutorials show hooks sewn into blouse. Where to buy these? I search on Amazon, but do they have correct products? Is this proper? Because in tutorials, I see ladies sew thread that the hook latches on, https://www.amazon.com/Bememo-Sewin...sprefix=hook+and+eye+latch+sew,aps,162&sr=8-2 Please help. I want to buy what is necessary.