ImpulseRC TPU Duct Kit for Micro Apex 3"TPU Cinewhoop conversion parts for ImpulseRC Micro Apex 3" Duct Kit. Check out our Micro Apex Collection, and the rest of our ImpulseRC Products! 3D Prints: Included with the 3D printable files are extended camera mounts which keep the DJI camera safely protected within the bounds of the ducts while making sure they are completely out of shot. The ducts are designed as four individual pieces, however the front and rear ducts on each side are connected