Shimano 10 speed chainrings - teeth count different from 53 / 39 available?

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I'm building up a 10 speed raceday bike but I want 50 / 42(flatter races) - are these available in 130BCD for 10 speed?
Where from ?

I'm building up a 10 speed raceday bike but I want 50 / 42(flatter races) - are these available in 130BCD for 10 speed?
Where from ?

Sure, TA is a great choice.