Bass Locking tuners can helps you to fast, smooth tuning and keep your Bass accuracy. These stainless steel bass tuning knobs feature a fully enclosed metal construction that prevents accumulation. Make of stainless steel, rustproof and enduring. Maintains smooth damping feel even with frequent tuning adjustments during live . , easy to replace your old or dirty Bass tuning pegs. With these tuning pegs, you can tunes Bass strings fast and accurately.