ILM ~ Integrated Low Mount Arm for the Mongoose M-2.3 or M-3.5(all) If you prefer a low or bottom mounting position for the Mongoose Gimbal Head this attachment does just that. The arm mounts in place of the quick release and the quick release then mounts to the arm. It is a semi permanent mounting that takes about two minutes, and can be un-mounted in two minutes as well. It does not change the position or function of the IFA. The Integrated Low Mount adds 5 ounces to the Mongoose. The ILM and IFA pictured are on a 3.6 with an IFA that are not included.