It would be good to know what you are going to use them for. Nicro Fico (now defunct) used to hold the market on rubber cheeked snatch blocks and now you can find them with a Ronstan name on them. They come in a couple of different varieties.....trunnion and regular. The trunnion type has more gimbal to it for certain applications so the turn of the line doesn't bend the shackle shaft, etc. I might have a few Nicro Ficos around, but probably not matching and different sizes and probaby new, but been around a long time.
