This is an industry standard wind up with a crank to adjust the height. Here are the details:
• Also known as the Avenger B201
• Made of heavy duty steel
• Comes with wheels and has one rocky mountain leg
• This stand has two risers and a junior and a baby pin receiver
• Measures 70″ in height when collapsed, and 12′ 5″ fully estended.
• Weighs approximately 50 lbs.