$fn=120;

difference() {
  union() {
    cylinder(d=133, h=40);
    cylinder(d=185, h=4);
  }
  cylinder(d=125, h=100, center=true);
  for(r=[0:360/6:359]) rotate([0,0,r]) union() {
    translate([81,0,0]) cylinder(d=6.5, h=20, center=true);
    rotate([0,0,360/6/2]) translate([125/2,0,25]) rotate([0,90,0]) cylinder(d=6.5, h=20, center=true);
  }
}