If I remember for the ones I had, they seemed okay but I didnt have good luck attaching them to shafts, so I just passed them on to someone! Use feathers now, especially my own turkey wings!
They are very heavy compared to other fletching, and as mentioned, soft. Sims products do make bows quieter, but fletching is not an area of my setup that noise or lack of it is a primary factor. I greatly prefer Vanetec vanes, or feathers.
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