I have a 2010 Rotor Agilis XC3 crankset, im wanting to go 1 x 9 on it and ideally i would like a spiderless ring. Problem is i need a $50 tool from Rotor.usa to remove the lockring to even see spline type of the spider. Ive done a LOT of googling and the best i can come up with is the bottom pic.

Does anyone know or can confirm if this is the spline type of my crankset.

My crank....


10 tooth lockring


Is this the spline pattern of my crankset ?


Thanks in advance