This Two Bike Mount Kit accessory designed for the BlackBox PRO enclosed cargo carrier secures bicycles of all frame styles and tire sizes including electric bikes in upright position. The space-saving and adjustable design supports two bikes within the dimensional space of the BlackBox PRO carrier. Features & Specifications Kit includes four tire pincher support bars with foam pads and rubber straps for securing two bikes in upright position without removal of front wheels. Supports bicycles without removal of front wheel, designed for use with BlackBox PRO cargo carrier model #H02196 (sold separately) Highly adjustable and adaptable system for securing bikes of all frame and tire styles including electric bikes and fat tire bikes Supports two bicycles with maximum 72 inch length and 35 inch height including seat and handle bars; requires BlackBox PRO carrier model #H02196 for sufficient dimensional space requirements of adult bicycles without removing front wheels Made of black powder coated steel Weighs 28 lbs