Description This all-black integrated fine tuners with dual rows is designed for cellos, providing a sleek and professional look. The tuner features a hook and knob mechanism, ensuring precise string adjustments. Ideal for both beginners and professionals, it enhances the tuning experience by providing smooth and accurate control over string tension. Features -Color:Black -Material:Plastic, metal -Size:4.00X2.20X0.50cm/1.57X0.86X0.20in -Precision tuning: the dual fine tuners design allows for precise pitch adjustments, enhancing your playing comfort -Elegant appearance: the black string hook and knob offer a sleek and sophisticated look, elevating the overall visual appeal of your instrument -Integrated structure: the one piece construction ensures easy installation, durability, and reduces maintenance hassles -Wide compatibility: suitable for 3 /4 to 4 /4 cellos, this tuner is highly compatible, meeting the needs of different instrument sizes -Stable usage: expertly crafted to minimize pitch drift during tuning, ensuring stable and high playingPackage list: 4 x Violin Fine Tuners 4 x Screws