Features: Portable: This guitar kit has total of 13 different sized round files designed to polish the string grooves, making the string grooves on instruments such as guitars very smooth and easy to use. Rust-proof and Strong: Our guitar repair tools are made of high-grade stainless steel material, which has higher strength and hardness, and are rust-proof and strong, and has long service life. Portable & Convenient: The guitar and bass bridge file set are equipped with storage box, which are light and convenient, and are quick to use and store. Its practical guitar repair tool and can be used with peace of mind. Wide Applicability: This guitar-bass bridge file set has wide range of applications and are best for stringed instruments such as guitars, electric guitars, basses, etc., providing excellent performance. Service: If you have any questions about our guitar bass bridge file group, you can contact us at any timing, we will reply and try our best to solve your problems in timing. Specifications: Material: Stainless Steel Color: As The Picture Shows Package Weight: approx.23g Size: approx.7.8x2.9x1.2cm/3.07x1.14x0.47in Package Includes: 1 Set of Guitar Nut Slotting File note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!