Material: Commercially Pure (CP)Grade 2 Titanium,which is the most bio-compatible titanium grade of all . - 2000~3000 Gauss Power Magnet on Every Link - Durable Safety Clasp - Length:7.5/8.5 inches - Width:1/2 inch - Plating:3 micron 18K plating, applied using an IPG plating method resulting in an extremely durable finish. - Links can easily be removed to adjust length - Function: Magnets have been used for years for their healing effect to stimulate , improve blood circulation, relieve stiffness and fatigue.