Enhance the performance of your instrument with these "Instrument Core Axle Screw Accessories". Designed for both three-flat key and four-flat , these accessories cater to the unique requirements of different instruments. The core axle screw ensures the stability and reliability of your instrument, allowing you to play with confidence. With a user-friendly installation process, these accessories make instrument maintenance and part replacement . Invest in these accessories for a durable and long-lasting solution. Features -Color:Golden -Material:Metal -Size:1.00X0.80X0.80cm/0.39X0.31X0.31in -The "Instrument Core Axle Screw Accessories" are essential components for both three-flat key and four-flat . -These core axle screw accessories ensure the stability and reliability of your instrument. -With a simple and easy installation process, they are convenient for instrument maintenance and replacement. -Carefully designed and manufactured, these accessories are durable and long-lasting. -We offer a variety of specifications and models to meet the different needs of different instruments. Package list: 10 x Music Instruments Screws