The Stan's NoTubes Bicycle Tubeless Tire Sealant Injector is a high-quality product made of durable rubber. This product is designed specifically for injecting tire sealant into tubeless tires, ensuring a secure and airtight seal to prevent punctures and leaks. The package includes 1 sealant injector, making it easy to use and helping riders maintain their tubeless tires with ease. Stan's NoTubes is a well-known brand in the cycling industry, known for producing reliable and high-performance products for cyclists.