The NiteRiderA(R) Tail Light Strap Mount allows for quick installation and fitment on to standard seat posts. It features a quick release tab that allows you to remove just your tail light, leaving the strap mount installed on the seat post; ideal for when you leave your bike unattended or when it&';s time for a recharge. SYSTEM COMPATIBILITYa Sentinel(TM)a Omega(TM) 330a Solas(TM)a Sabre(TM)a CherryBomb(TM)a TL 5.0 SL(TM)a Vmax+(TM) 150 NOT COMPATIBLE WITH Emax+(TM) 150, OMEGA(TM) 300, SENTRY(TM) AERO 260, AND BULLET(TM) 200 TAIL LIGHTS