Features: *IXF MTB Road Bike Bicycle Crankset BCD104 Cranks Arm & Bottom Bracket &Chainring *100% brand and high quality *Made of high-quality materials, durable and practical *Suitable for mountain bikes, road bikes with BB width of 68--73mm *Advantages: Made of aluminum alloy, light weight, stylish appearance, strong axis strength, strong compatibility *Characteristics: wide and narrow teeth, not drop chain Specifications: *Material: Aluminum Alloy *Color: Black (As Pictures Show) *Crank: 170mm(6.7inch) *Crank screw hole diameter: 15mm *Compatible: single disc, double disc, triple disc *Model: BCD 104 *Package option: 1: 1 Pair of Cranks 2: 1 Pair of Cranks + 1 Bottom Bracket 3: 1 Pair of Cranks + 1 Bottom Bracket + 1 Chainring(34T) Package Contents (optional): Package 1: 1 Pair of Cranks Package 2: 1 Pair of Cranks + 1*Bottom Bracket (Including crank screw + crank screw wrench + 4 single disc screws) Package 3: 1 Pair of Cranks + 1*Bottom Bracket + 1*Chainring(34T) (Including crank screw + crank screw wrench + 4 single disc screws) Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.