Solid 316L 18″ stainless steel shank Heavyweight 2.2 lb. solid brass head Durable 6061 T-60 aircraft aluminum shafts (4 or 2 lengths) Custom Engineered 6061 T-60 aluminum coupler & end cap Rigged bronze dart w/ 5′ PVC coated cable 6-compartment storage bag The POON Harpoon is the finest quality harpoon available on the market. Built with the highest grade of materials available with precision machining. All component are Electroplated or Hardcoated for corrosion resistance. This harpoon is built to last and 100% guaranteed against failure of any kind.