Chainring in 5182 aluminium
36 teeths and under is for chainring in the second position on the triple crankset.
BCD 104mm which fits Shimano and Stronglight triple crankset
With 4 bolt holes.
BCD = draw a cirkel which runs through all bolt holes and the diameter, then you got the BCD also called ø measure.
Weight: about 53 grams.