Item Details:* For Walbro Carburetor Primer Pump For Stihl Shindaiwa Echo Homelite Robin Carburetor * OEM Walbro Part # :188-12 188-12-1* Perfect replacement for existing stock * * Color: Transparent (as pictures show) * Dimension: OD. : 17mm/0.67 inch (Approx.) .ID. : 12mm/0.47 inch (Approx.). Height: 14mm / 0.55 inch (approx.). Outer Flange Diameter: 16mm/0.63 inch (Approx.).* Quantity: 100pcsFit for:Echo 12318140630 & 12318109560 Support Homelite 01201 & UP04802Support McCulloch 22583400Shindaiwa 2003681670Stihl 4133 121 2700Package Contents: 100 * Carburetor Primer PumpNote:The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.