Stainless steel "anti-magnetic" she consist just allow them to be flexible enough to firmly grasp the components but without the tweezers from twisting as is the case with some cheap model.
This particular pattern is angled at 60 ° to approximately 1.3 cm from the end. This allows to position the components same platinum medium while maintaining the palm of the hand presses in on the table and allowing the index available to exert a high pressure on the lower level of the curvature of the tool. All this guaranteed accurate positioning and without "tremblage" to prevent camera or peeling of the component at the time of welding.
In summary a very good buy for the use that I made. And use, I realize that I served much more often than straight tweezers 92 June 22 I bought at the same time the latter are especially handy for revealing the "tri" components rather than welding operations proper.