Set of 4 thermostatic valve control knobs with thread for radiator and underfloor heating systems, adjustable plastic handwheel (black)

Set of 4 Radiator Knobs: Four plastic knobs supplied in black, to replace multiple radiator valve knobs or upgrade a manifold control bank. Precise Flow Adjustment: Designed for tactile control, each valve knob offers consistent rotation so you can confidently adjust the temperature to room temperature. Compatible Thread Fit: Fits standard valve stems on many radiator and manifold systems, making it a simple option for common heater setups. Modern Look, Practical Construction: Stylish black and white finish that complements most interiors, while the GRP plastic construction withstands everyday use without warping. Check Size Before Ordering: Check your size chart and ensure your valve thread and dimensions match to avoid fitment issues.