mouse, sold the ob classic...you missed aheck of a shaft. Better feel than predator,not hollow/light in the front end and hit like a regular maple shaft. I have always been a fan of predator but the ob clasic shaft has all the right characteristics while giving you the same low deflection performance. OB sells the 3/8x11 classic black collar that will screw right on to your omen. Good Luck, I'm gettin ready to buy a Cog.Lol