IT WAS UNABLE TO... ImplicitRegion & DiscretizeRegion

Hello,
I’m trying to discretize a very fine ring with “ImplicitRegion”, but Mathematica does not let me.

in: ?x=ImplicitRegion[?0.12?^2?x^2+y^2??0.125?^2,{{x,-0.125,0.125},{y,-0.125,0.125},{z,0,1.}}]

out: ImplicitRegion[0.0144?x^2+y^2?0.015625&&-0.125?x?0.125&&-0.125?y?0.125&&0?z?1.,{x,y,z}]

Answer: DiscretizeRegion::drf: DiscretizeRegion was unable to discretize the region ImplicitRegion[<<2>>]. >>

BUT is a 3D Región, Why was it unable?.

Equal if i use:

in: ?x=RegionDifference[Cylinder[{{0,0,0},{0,0,1}},0.125],Cylinder[{{0,0,0},{0,0,1}},0.12]]

out: ImplicitRegion[0.0144?x^2+y^2?0.015625&&-0.125?x?0.125&&-0.125?y?0.125&&0?z?1.,{x,y,z}]

Answer: DiscretizeRegion::drf: DiscretizeRegion was unable to discretize the region ImplicitRegion[<<2>>]. >>

How can i do?, Thanks.

Jesús.