【High-Quality Materials】 YAMAHA piston springs are made from durable, high-quality materials. This allows them to withstand long-term use. 【Compatibility】 These piston springs are suitable for brass instruments such as euphoniums and support smooth playing. They are particularly highly compatible with YAMAHA products. 【Great Value Set】 Sold as a set of 4, you can get the necessary parts all at once, offering excellent cost performance. - Brand: YAMAHA - Model Number: G0141070 - Product Name: Piston Spring - Condition: New - Quantity: Set of 4 Thank you for viewing.