Holds fishhooks safely while pulling fishing line knots tight Extremely lightweight and durable. Machined out of a solid aluminum block and anodized in black. Embellished with two Pro Fish Gear logos. Works especially well with heavy braid, monofilament, and fluorocarbon fishing lines. The Hook Puller Ring allows anglers to quickly and safely pull knots tight by securely holding the hook and preventing potential injury. Works especially well with heavy braid, monofilament, and fluorocarbon fishing lines.