Felice Acekit Aluminum Alloy 31.8mm 7 Degree Bicycle Stem for Road Bike AM XC Mountain Bike with 1 1/8 Steer Tube and 1 1/4 Handlebar-BlackSpecification: Material: aluminium alloy 6061(for red II and black II) Material: aluminium alloy 7075(for red and black ) Color: black/red Weight of red II and black II: 156g/5.5oz Weight of red and black: 165g..