Tool free endcaps to adjust your V6 Rear hub to suit your new frame. Just pull off the old ones and push on the new ones, easy!
NOTE: Boost and non-Boost hubshells are different. It is NOT POSSIBLE to change between the two types by swapping endcaps
If you swap between Shimano and SRAM XD freehubs you need to order the correct driveside endcap. The endcaps are a different length and design.