Basic install chassis for the Sentry hilt design, not intentionally compatible with any other hilt design.A fully removable all in one chassis piece, removed and inserted from the pommel section of the hilt.Parts list for install:-CFX, Proffie, or GHV4 soundboard-shortpin NPXL hiltside connector (standard or ECO compatible)-two 1.5mm brass tactile switches (included with chassis print)-removable 18650 protected button top cell (Option 2 battery contacts included with chassis print)-high amp killswitch-28mm bass speaker-TCSS or KR OLED screenFULL PARTS KIT includes:-Choice of CFX, ProffieV3.9 or GHV4 soundboard-NPXL V4 unassembled shortpin hiltside connector-KeepPower 18650 3500mah 15A protected button top cell-high amp killswitch-28mm X-BASS 4ohm/3W bass speaker-Blue or White OLED Screen (Please choose option)Pre-Installed Version Available For:-CFXPre-Installed chassis options are installed with above forementioned parts.