Durable Reinforced Design< The Self-Defense Tool features a full-length G10 core with no metal components - G10 is a composite material made from fiberglass & epoxy resign. It is known for being one of the toughest glass-fiber laminates available. The Self-Defense Tool is 50% heavier than typical writing instruments. Low-Profile Design Designed with a discreet everyday-carry profile the Self-Defense Tool mirrors the shape and size of common pocket items or writing instruments. It is easy to carry without drawing attention to the usera |.whether it is clipped to the users pocket tucked in a bag or stored in a vehicle.