ITEM NAME:2pcs Carburetor Snap-in Primer Bulb Pump for Stihl FS120 FS200 FS200R FS250 Description: 100% Brand new and high quality New and high quality aftermarket replacements Fit for Stihl HT250 FS36 FS40 FS44 FS120 FS120R FS250 FS250R Size (Height x Width): Approx. 31.4x21.4mm/ 1.24x0.84 inch Specification: Replace part number: For Rotary 11510 For STIHL 4130 350 6200 For RYOBI 683974 791-683974 B For 188-512 188-512-1 Package Includes: 2 Pieces of Primer Bulb SKU: FUZ0011044260016986.Fit for Stihl HT250 FS36 FS40 FS44 FS120 FS120R FS250 FS250R. For STIHL 4130 350 6200. Size (Height x Width): Approx. Replace part number For Rotary 11510. For RYOBI 683974 791-683974 B. For 188-512 188-512-1.