BY-LINK Part No. 771-010
Fits: Echo, Poulan

BY-LINK Part No. 771-104
Fits: Husqvarna, Jonsered, Poulan

BY-LINK Part No. 771-041
Fits: Husqvarna, Jonsered

BY-LINK Part No. 771-232
Fits:
Stihl - 017, 018, 021, 023, 025, MS210, MS250

BY-LINK Part No. 771-107
Fits:
Stihl - 029, 034, 036, 039, MS290, MS360, MS390