Here's a polished product description:
Aphex Dominator I / Dominator II – 12mm Black Knob Cap with White Indicator Line
Compatible with:
Aphex Dominator I
Aphex Dominator II
Replacement 12mm black knob cap with a white indicator line for the front-panel controls used on the Aphex Dominator I and Dominator II. This high-quality replacement restores the original appearance of your equipment and provides a secure, reliable fit.
Specifications
Top Diameter: 12mm
Bottom Diameter: 10.5mm
Color: Black
Indicator Line: Yes
Indicator Line Color: White
Features
Direct replacement for the original knob cap
Durable molded plastic construction
Press-fit installation
Ideal for replacing missing, cracked, or worn knob caps
Restores the original look and feel of your Aphex unit
If you're selling on Shopify or eBay, I can also create an SEO-optimized title (under 80 characters) and meta description for this product.