Great Planes Brushless Motor Mount Small Motors FEATURES: Perfect fit for both 28mm RimFire Outrunner and 24mm Ammo In-runner motors. Universal motor mounting bolt pattern insures an easy fit with many brands of motors. Lightweight aluminum construction for added durability. Unlimited adjustability from 1.6-2 (40-51mm). For small motors.;INCLUDES: One motor support for small motors. All assembly hardware.;REQUIRES: Mounting to the firewall and attaching the motor.