item 1:MTB hollow one crankset crank
Crank arm: 170MM
Material: Aluminum
Specifications: BCD 104
[Axis]: cups-BC-1.37 * 24 / 68mm
[Chain line]: 48.5mm
Weight: about crank set about 637g
Advantages: made of aluminum alloy, light weight, stylish, flashy styling, high axial strength and compatibility
item 2:Bottom bracket:
Origin: Taiwan
Brand: JIANKUN
Integrated hollow tooth plate axis for mountain biking, road cycling Five-width 68--73mm can be, and shimano, FSA compatible. Giant ATX770 ATX770-D XTC 750
Item 3:BCD 104 chianring / ring / chianwheel,
Material: 7075 aluminum, CNC,
Teech :38T (item has 32T, 34T, 36T, 38T, if you need,Pls leave a message , do not leave a message to send 38T Round chian ring)
Color: such as pictures, black, green, red, gold, blue, purple
Chianring Shape: Round
Weight: 38T/63g
Features: wide and narrow teeth, not drop chain.