mechted said:those stop you from bending the main leaf at full droop, so they are a very good thing

85mudblazin said:HELL NO, dont use them. I have mine in there but I removed the bolt. If you leave the bolt and when on a hard droop the spring will bend around that bolt. If you are worried about to much fanning clamp your main leaf and the one below it with some 2" strap and a bolt on either side. I have seen many springs bent by that stupid little bolt.