Description If the timer knob becomes damaged, important to replace it promptly. The timer knobs are a versatile tool that the timer control quick and easy. Made of plastic material, reliable and reusable, not easy to rust, wear, fade or deform, suitable for long term to use. Features -Color:Black -Material:Plastic -Size:4.00X4.00X3.50cm/1.57X1.57X1.38in - Universal compatibility, suitable for various types of timers, including commercial and home. - Timer knob design for easy adjustment of usage time, give you more convenience to use. - Time control knob for adjusting time according to your needs, meet your using needs. - These timers replace knobs are perfect for home or office use. Made of plastic materials for durability. - Lightweight design, right size to carry, these timers replace knobs are easy to use and easy to operate. Universal compatibility, suitable for various types of timers, including commercial and home. Timer knob design for easy adjustment of usage time, give you more convenience to use. Time control knob for adjusting time according to your needs, meet your using needs. These timers replace knobs are perfect for home or office use. Made of plastic materials for durability. Lightweight design, right size to carry, these timers replace knobs are easy to use and easy to operate.