DURABLE MATERIAL: Crafted from robust plastic, this RV window and vent knob measures 2-1/4 inches in outer diameter with a 1inch long shaft, ensuring long-lasting reliability and resistance to wear and tear in various environmental conditions.UNIVERSAL COMPATIBILITY: Featuring a 1-inch long shaft, this versatile knob is designed to fit a wide range of RV window and vent mechanisms. Ensure a perfect fit by comparing the dimensions with your hardware before installation.SEAMLESS REPLACEMENT: Engineered as a direct substitute for most standard window and vent knobs, this product facilitates an effortless upgrade or repair, enhancing the functionality and aesthetics of your RV's interior hardware.SIMPLIFIED INSTALLATION PROCESS: This knob is specifically designed for easy installation, providing a straightforward solution for replacing your RV's window and vent knobs. It ensures a secure and stable attachment to maintain proper function.FUNCTIONAL AND STYLISH: Ideal for both replacements and upgrades, this knob not only resolves wear and tear issues but also adds a touch of style to your RV's interior. Its practical design ensures improved usability and accessibility.Color: blackMaterial: plasticPackage Contents:3 x RV Window Latch Knob with Screw(screw random colors, don't accept the specified color)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.