1. Gas Fireplace Control Knobs: This set includes 10 control knobs designed for patio heaters, gas fireplaces, and gas grills. 2. Easy to Replace: The control knobs are easy to install and replace, allowing you to conveniently adjust the heat output of your patio heater or gas fireplace. The knobs are 8mm mounting jacks. 3. Material: These control knobs are made of plastic for long-term use in outdoor environments. 4. Compatibility: Designed to be compatible with most patio heater, gas fireplace, and gas grill models, ensuring versatility and ease of use. 5. Improved Control: With these control knobs, you can adjust the flame and heat intensity for a comfortable and enjoyable outdoor heating experience. Colour:black Material:plastic size:44 x 20mm Package Contents: 10 x Outdoor Gas control Knob 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.