This is a set of trumpet finger button screws, which is made of premium copper and stainless steel material, so the screw can be used for a long term. Simple design, small in size, easy to install. Perfect replacement to replace the broken trumpet finger button screw. Features -Color: As shown -Material: Copper, stainless steel -Packing size: 11.00X8.00X1.50cm/4.33X3.15X0.59in -The trumpet screws are made of which is strong and durable to use. -Fine workmanship, smooth surface, nor burrs, small and light, provide more convenience for you to install it. -Easy to install and replace, they are perfect replacements for the old or broken one. -These trumpet screws are one of the essential tools for trumpet, a great musical instrument part. -This product is professionally manufactured with stable characteristics and high reliability. Package list: 3 × Screws 3 × Universal Joints