The RX Machina mechanical mod comes with the signature Honeycomb Resin Sleeve designed by JayBo is born. It has the smallest possible profile for a 20700/18650 mod. RX Machina moves all the functional button parts up into the 510 section. Although it is a simple mod, it has multiple functions. The Guillotine RDA features 24mm diameter and uses the newly introduced clapton coil to provide you excellent flavor. The Guillotine RDA has a removable lower sleeve which completely exposes the build space, making the installing of coils and cotton extremely easy. Instead of the traditional thread design, the application of no thread connection makes the assembly much easier.