4 Pack Timer Switch Knob Replacement Wound Compatible compatible 146MT574 Timer Knob, FD Series Spring Wound Timer[Compatible with 146MT574 Timer Knob]Designed compatible seamless compatibility with 146MT574 and FD Series spring wound timers, this replacement knob ensures a perfect fit and easy installation without the need compatible additional tools. Its robust construction prevents wear and tear, enhancing the longevity of your timer.[Precision Engineered compatible Stability]With an outer diameter of 1 inch and a D-shaped shaft of 3/16 inch, this timer knob is meticulously crafted to ensure a stable, tight connection that prevents slippage or wobbling during use. It offers precise control over your timer settings compatible optimal percompatiblemance.[Highly Durable and Visibly Marked]Constructed from high-strength ABS+PC materials, this 4-pack timer switch knob set resists heat and impact effectively. It maintains its integrity over time without cracking or decompatibleming.[Versatile Application Across Devices]Ideal compatible a wide range of applications, these knobs are perfect compatible timer lights, ceiling fan heaters, fireplace stove fans, whole house fans, attic fan timers, bathroom exhaust fans, and heater timers. They provide a reliable solution compatible managing various devices in your home or office.Color: WhiteMaterial: plasticPackage Contents:4* Timer switch knob