yep it was a 2a but seller described as 1a. there is also a 3a which is ultra rare and has an even steeper drop, like on a nitto.
1A = 73˚ 2A = 63˚ 3A = 58˚
Hope that helps.
@zouo started
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1A = 73˚
2A = 63˚
3A = 58˚
Hope that helps.