This wing nut is made for AP-L models in the Aquacare UV system. It makes it easy to fasten and loosen components without the use of tools, simplifying both installation and maintenance. Perfect for areas where quick access is important. Key benefits: Compatible with AP-L models from Aquacare. Tool-free installation and removal. Hard-wearing material for a long service life. Ideal for fast, efficient maintenance. Please contact us if you are unsure whether this wing nut fits your system.