Zinc is a toxic free weight for Pinewood Derby cars. These three round weights are easy to install. Drill 3/8" diameter hole in car (with our 3/8" Drill Bit). Cut off the weight you need, keeping car as heavy as specifications allow. Then insert the weight into the body of the racer. Fill with Monkey Mud Body Putty, sand when dry, then paint.
Approx. 1 oz. each.