Poweka New Pack of 5 Primer Bulb For Stihl FS46 FS45 FS55 FS40 FS40C FS50 FS90 String Trimmer New high quality aftermaket replacement parts Fits stihl FS46 FS45 FS55 FS40 FS40C FS50 FS90 Replace ZAMA 0057003 0057004 0058001 Package includes 5pcs primer bulbs You will receive exactly what you see on the picture