I want to get the vv gripper, but I currently use 808 devices. I use the x2 batteries and clearo's. I want to be able to continue to use these as my vapeing device at work and when out and about. This adaptor looks like it will allow me to use the x2 clearo's (vision ce4's) and use them on a 510 device. The x2 clearos are simply a stardust/ce4 with an 808 connection inside. The outer/large threading is the same as ego threading. Here is the product.
http://www.madvapes.com/pv-parts/adapters/510-to-808d-tank-adapter.html
http://www.madvapes.com/pv-parts/adapters/510-to-808d-tank-adapter.html