If you want to feel super safe during your workouts, the FITIFY Gym Machine Wire Lock is your go-to buddy! It's made from solid iron rod , so it's strong enough to handle anything you throw at it. No matter how heavy your weights are, this lock will keep them in place. Setting it up is easy peasy with the handy bolts and L- key. And when it clicks into place, you know it's doing its job right!