A couple of loco's

No not really, the hook is a separate moulding, but the base is held onto the body with a rivet rather than a screw so you wouldn't be able to get them apart to replace it without drilling out the rivet. The 'eye' is a loop moulded into the base, so to replace that if broken you'd have to replace the entire base plate, again after having drilled out the rivets to separate it from the body. Overall a rubbish design from a functional perspective...