Fits for Crockpot most slow cookers Scale lines on the surface of the knob for easy pointing adjustment The knob has a built-in brass bolt and can be adjusted to fit the slow cooker in use. The 4-piece knob set includes 2 standard and 2 small knobs to ensure practicality and adaptability to a wide range of slow cookers. Note: Make sure the machine is turned off before use and the knob scale is aligned with the “OFF” Fits for Crockpot most slow cookers Scale lines on the surface of the knob for easy pointing adjustment The knob has a built-in brass bolt and can be adjusted to fit the slow cooker in use. The 4-piece knob set includes 2 standard and 2 small knobs to ensure practicality and adaptability to a wide range of slow cookers. Note: Make sure the machine is turned off before use and the knob scale is aligned with the “OFF”