Material: Paper and metal Model Compatibility: 250NK, 250SR, NK250, CF250, and other 250cc models Design: Features an aluminum bottom interface for improved heat dissipation Purpose: Provides sealing for motorcycle engine cylinders Performance: Constructed with thickened rubber for corrosion-resistant, odorless sealing under operating conditions This cylinder gasket kit is designed as a direct replacement for specified 250cc models.It includes all necessary gaskets and seals for a complete engine service or rebuild.The combination of paper and metal materials ensures performance, while the design supports consistent engine compression and leaks.Verify model compatibility before installation.