This rear bike rack is a workhorse for commuters, tourists, or anyone who needs to carry stuff on their bike. It's built from sturdy aluminum alloy with a reinforced frame, and it can hold up to a whopping 110 pounds – that's enough for heavy panniers, a big backpack, or a grocery basket. The quick-release mechanism on the main tube makes installation and removal a breeze, no tools needed for the basic setup (though a tool is included for final tightening). It's highly adjustable: the top platform extends from 16\\\ to 18\\\, and the side arms adjust too, so it can fit a wide range of bike frames from 26-inch to 29-inch wheels. Important: it needs a standard diamond frame with at least 2 inches of exposed seat tube, and it won't fit suspension seatposts, folding bikes, or fat tire bikes. Nice extras include an expanded side guard to keep bags out of the spokes, a detachable mudguard, and a big reflective plate for safety. A fantastic value for a heavy-duty, versatile rack.