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 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. a 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 of style to your RV's interior. Its practical design ensures improved usability and accessibility. Color: black Material: plastic Package 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.