Echo Original Equipment  3/8" Pitch   0.050 Gauge Saw Chain - 28" - 72LPX93CQ

This  3/8" Pitch   0.050 Gauge Saw Chain - 28" is used here;

· CS-600P S/N: C22312001001 - C22312999999-->Chain, Guide Bar

· CS-600P S/N: C22413001001 - C22413999999-->Chain, Guide Bar

· CS-620P S/N: C26712001001 - C26712999999-->Guide Bar, Sawing Chain, Kick Guard

· CS-620P S/N: C26813001001 - C26813999999-->Guide Bar, Sawing Chain, Kick Guard

· CS-620P S/N: C69215001001 - C69215999999-->Chain, Guide Bar

· CS-620P S/N: C84429001001 - C84429999999-->Chain, Guide Bar

· CS-620PW S/N: C26912001001 - C26912999999-->Guide Bar, Sawing Chain, Kick Guard

· CS-620PW S/N: C27013001001 - C27013999999-->Guide Bar, Sawing Chain, Kick Guard

· CS-620PW S/N: C69315001001 - C69315999999-->Chain, Guide Bar

· CS-680 S/N: C68615001001 - C68615999999-->Chain, Guide Bar

· CS-7310P S/N: C80915001001 - C80915999999-->Chain, Guide Bar

· CS-7310PW S/N: C85415001001 - C85415999999-->Chain, Guide Bar

· CS-8000 S/N: 001001 - 999999 Type1-E-->Chain, Guide Bar

· CS-8000 S/N: 03001001 - 03999999-->Chain, Guide Bar

· CS-8000 S/N: C48003001001 - C48003999999-->Chain, Guide Bar

· CS-800P S/N: C30812001001-C30812999999-->Chain, Guide Bar

· CS-800P S/N: C30913001001-C30913999999-->Chain, Guide Bar

· CS-800P S/N: C68715001001 - C68715999999-->Chain, Guide Bar

This is an OEM Echo part.