Quick and Convenient: The Bakcou Folding Utility eBike Trailer is designed for hassle-free use, easily attaching or releasing from the rear axle of your bike. Flexible to switch between biking modes. Versatility & Compatibility: Includes axle extenders. Easily attach & remove to change the wheelbase of your Folding Deer eBike Trailer, providing versatility for various hauling scenarios & terrain. Versatile Hitch: The bike trailer comes equipped with a hitch that connects to both 3/8 and 10mm axle bolts, for broad compatibility. Additional hitch sizes are also available for purchase separately. Hub Motor Bike Compatibility: Ensure connectivity by ordering the 12mm hitch separately. This bike accessory ensures a secure and stable connection, suitable for a wider range of electric bikes. Join the Bakcou Tribe: Riding with Bakcou is more than biking – it's joining a community that embraces wild adventures. Outfit your bike with tough gear and become part of the Bakcou tribe. Bakcou eBike Deer Trailer - Folding Game Tow Behind Trailers for Electric Bicycles - Heavy-Duty Cargo Storage Utility Cart with Large All-Terrain Tires (Black)