Has 5 Point Star Pattern

Of Positions: 4

Soft Gasket on The Bottom

Width: 2 1/2" Thickness:

863 Spark Plug

Proven Part 2-Pack 20" Full Skip Chain For 20" Bar 0.325"" Pitch .050" Gauge 78DL Fits Echo 20LPX078G 917.255575 Has 5 Point Star PatternProven Part 20" Full Skip Chain For 20In Bar 0. 325 Pitch . 050 Gauge 78DL Fits Oregon 20JPX078G 0. 325 Pitch . 050 Gauge 78DL Full Skip Chainsaw Chain For Echo Saws Compatible With 20LPX078G Fits Echo CS 3600, CS 3900, CS 4000, CS 4100, CS 440, CS 4400, CS 450, CS 4500, CS 4510, CS 4600, CS 490, CS 500P, CS 501, CS 510 Pitch: 0. 325 Gauge: . 050G Drive Links: 78 Fits Oregon # 20JPX078G Can fit many Saws if your Bar Length=20" Pitch=0. 325 and Gauge=.