Usage Tips: Description The item is a pack of truss rod nut adjusting tools, including 10pcs truss rod nuts and 10pcs steel bar with plated surface, which ensures great durability and anti-corrosion performance. Suitable for guitar bass truss rod adjustment. Easy and simple to use and install. Great truss rod adjusting tool for guitars and bass. Features - Color: Silver - Material: Steel with plating- Nut: 18mm (H), 15mm (Outer diameter), 3mm (Inner diameter)- Bar: 80 x 3 x 3 mm- Hard and strong steel to ensur maximum endurance for durable and long-lasting use.- plating surface, smooth and glossy, great rust and corrosion resistant performance.- Work with most guitar, bass and mandolin, easy to install and use.- Great truss rod adjustment tool forel guitar, bass, mandolin.- The set includes 10pcs nuts and 10 steel bars, meet different requirements. Packing list: 10 x Truss Rod Nut10 x Steel Bar