100% Stainless Steel Wishbone Inserts (wisbone cord and other assembly components sold separately). These inserts are the newest addition to the Spearit NTR line of band accessories.--- They are machined from high quality 304 Stainless Steel for a lifetime of use.These Inserts are designed for a use with wishbone cord up to 2.5mm in diameter and they completely eliminate the need for wishbone installation tools. No more struggling with T type installation tools or needle nose pliers. Making bands just got easier even on the deck of a bobbing boat. They are machined from high quality 304 Stainless Steel for a lifetime of use.