New crank cracked counterweight

I’m not seeing any cracks, but I see break through from the drill. You would have to check it with dye and developer used to find cracks in steel. By the heat coloring on the metal from drilling, that area got over 600F. Poor job of drilling off center not using enough coolant or cutting fluid. Definitely not done by skilled labor and whom ever did the job owes you a new crank.