import cadquery as cq
w0=cq.Workplane('YZ',origin=(-43,0,0))
r=w0.sketch().segment((-5,-50),(5,-50)).segment((5,-24)).arc((25,0),(5,24)).segment((5,50)).segment((-5,50)).segment((-5,24)).arc((-25,0),(-5,-24)).close().assemble().finalize().extrude(86)