import cadquery as cq
w0=cq.Workplane('YZ',origin=(-41,0,0))
r=w0.sketch().segment((-50,-39),(-18,-39)).arc((0,-43),(18,-39)).segment((50,-39)).segment((50,39)).segment((18,39)).arc((0,43),(-18,39)).segment((-50,39)).close().assemble().push([(-18,-13)]).circle(4,mode='s').finalize().extrude(59).union(w0.sketch().segment((-10,-42),(10,-42)).segment((10,42)).segment((-10,42)).segment((-10,-23)).arc((-8,-24),(-10,-26)).close().assemble().finalize().extrude(82))