Lead is a heavy metal that can penetrate the blood-brain barrier and interfere with the regulatory action of calcium on cell functions in the brain, inducing damage to multiple parts of the brain. Unfortunately, it's really heavy and really cheap - leading it to becoming the top choice for the inside of arborist throw weights. That's why Notch's new ZERO throw weights are a fantastic change from the status quo! The ZERO throw weights are built with steel bearings so you can be sure that you're not going to end up poisoning your customer's dog with a lost throw weight. Also, if you use lead-free throw weights, you can tout that in your market materials to get more customers!
