The Sprayer Pump is made of alloy , it offers large rates, outstanding stability, and exceptional wear resistance. Compatible with for 695 PC Pro /795 PC Pro/ 3900 PC Pro Sprayer Airless Paint Sprayer Easy to to complete the installation of the pump. 16x414 Airless Paint Sprayer Pump Please shake the pump several times before installation to prevent the internal steel ball from adhering to the alloy plate, which could otherwise cause the product to fail to work properly., Manufacturer: Akfldms