Item Type: Valve Plate Material: Aluminum Alloy Uses: Air Compressive Air Pump Accessories Drive Mode: Electric Applicable Model: 550W / 1100W / 1500W 550W: Outer Diameter Approx. 60 x 48mm / 2.3in x 1.9in [45 Degree Angle] 1100W: Outer Diameter Approx. 60 x 48mm / 2.3in x 1.9in[90 Degrees Right Angle] 1500W: Outer Diameter Approx. 66 x 56mm / 2.6 x 2.2in Package List 1 x Valve Plate Please allow 0& 8209;2 cm error due to manual measurement. Thanks for your understanding. 1High quality materials for this cover, high temperature resistance and anti-fatigue 2Not easy to wear during use, long service life. Emptive, low noise, convenient installation 3With professional design and reasonable structure, the product is easy to replace and install 4The valve plate is made of highstrength material, safe and reliable. Safe to use 5The valve plate possesses high workpiece accuracy, good performance and quality, which meets strict quality control standards