104BCD Oval Chainring MTB Mountain bike bicycle chain ring BCD 104mm 32/34/36/38T ultralight crankset Tooth plate PartsProduct parameters:Model: DECKAS BCD104Material: Aluminum alloy 7075BCD: 104 mmTeeth: 32/34/36/38TPitch: 104 BCD OvalWeight: 32 t / 39 g 34 t / 48 g 36 t / 61 g 38 t / 78 gCompatible with: All 7 to 12 speed chainColor: Black, Red,Blue,Gold,Green,SilverProcess:Full CNC CNC engraving and milling, anodic oxidation, full of the laser markingFunction:Minimize the probability of chain, simplifying the variable speed system, minus the excess weight