The compound shown is 1,2-dimethylcyclohexane with the two methyl groups on opposite faces of the ring. Considering configuration only, it is

The compound is trans-1,2-dimethylcyclohexane, here (1S,2S). Both ring carbons bearing methyl are stereocentres and they have the same descriptor, so there is no internal mirror plane (a plane bisecting the C1-C2 bond would require the methyls to be on the same face). The compound is chiral; its mirror image (1R,2R) is a distinct enantiomer. Ring flipping interconverts chair conformers of the same configuration and never produces the enantiomer.