...for making an AWESOME arrow. I ended up choosing the Maxima Hunter 250's after countless hours trying to choose. In the past 3 days shooting with them and my new bow. I have had 3 robinhoods! And only lost one shaft , 2 of the robinhoods were other people's arrows in the 3D shoot with me. Out of a dozen I only had 1 that wobbled badly and about 6 that were deadnutz perfect. The other 5 were still VERY good. Oh and the "Bulldog collars" seem to be nothing but extra weight, not really much of a shaft protector[&:]. A side note though, robinhooding other peoples arrows can be a bad situation [8D], one of them was an X-Cutter Pro, the other was a Expedition Hunter, the bad part about the Expedition Hunter was I just SOLD him the arrows not 30mins before.[8D]