Rage Outdoors Nockturnal Green

I use carbon express 20 inch pile drivers and assumed these would fit. I love those bolts as they have never let me down. 2 years in a row i brought home very nice deer. I got size one of the this knock brand and they did not fit those bolts. These knocks were too big and forcing it in could hinder the integrity of the bolt as it splits the shaft when forced in. They did fit my cheaper bolts because the diameter is slightly bigger in that brand of 20 inch bolts. So keep in mind these do not fit all bolts in 20 inch and probably 22 inch as well. I know it says thry do but that isnt true. Kinda crazy cuz feradyn owns carbon express... Its kind of trial and error and alot of money if you arent so technical you know the diameters of all your bolts.