Fits: for STIHL 017 018 021 023 025 Chainsaw MS170 MS180 MS210 MS230 MS250 Replace 1123 640 1705, 1123 664 2400, 0000 955 0801 Package includes : 1 sprocket cover, 1 pair of bar studs, 1 pair of bar nuts, 1 bumper spike Ships from China with secure transport, arrival within 6-15 working days.< /p>