Allows you to easily carry a drybag, tent, packraft or just about any other bag on the back of your bike Cradle on top can be rotated 90 degrees to allow for use on bikes with dropper seatposts Includes one Spider B cradle, capable of carrying up to three, use AR7013 for additional cradles Each cradle is capable of carrying up to 9 lbs, the rack has a maximum capacity of 35 lbs Easy attachment system using 5mm hex wrench Third party online sales strictly prohibited by manufacturer