The Tronixpro Lead Lifts 37×60mm Black are a practical solution to keep your leaders away from obstacles while reeling in. Their unique design makes them work like an airplane wing. While reeling in, the speed generates an upward force, causing the lead to rise up and stay away from the bottom. This makes fishing in rough and rocky substrates more efficient and reduces the loss of leaders and fish. For best results, the lead elevator should be mounted above the lead. Comes with a Tronixpro Oval Split Ring for quick and easy attachment of weights.