GMC Denali Women&#39;s Road Bike (20"/50cm Frame) Frame: Aluminum 7005 straight gauge; 19.5 inch frame Fork: GMC Series 7000 steel; traditional dropped top tube women's configuration Brakes: Promax 501A Alloy Caliper Brake Shimano derailleur and Shimano Revo shifts Weight: 29 pounds Handle Bars need to be Tightened to control movement