Features: This premium piston floating valves is crafted from sturdy rubber for excellent durability and stability, ensuring long term reliability and compatibility with models like MCN150, MCN250, N66C 1, and DW66C 1. Featuring superior sealing performances to prevent air leaks and enhances tool efficiency, it boasts an easy install design for quick replacement without special tools or expertise. Ideal for professional and craft enthusiasts who maintain or repair rivet guns and pneumatic tools, providing a dependable solution for regular upkeep. Perfect for use in workshops, construction sites, and home garages where pneumatic rivet guns are employed, ensuring consistent performances in demanding environments. Rigorously tested for excellent wear and corrosions resistance, this piston valves extends equipment lifespans by withstanding harsh conditions while maintaining optimal functionality. Specifications: Component:Rubber Diameter:Approx.3cm/1.18inches Package Includes: 1Pc Rubber Piston Floating valves note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!