This part is compatible with the following machines: Echo SRM-210SB (05001001 - 05999999) Straight Shaft Trimmer / Brushcutter SRM-210SB (07001001 - 07999999) Straight Shaft Trimmer / Brushcutter SRM-210SB (09001001 - 09007107) Straight Shaft Trimmer / Brushcutter SRM-210SB (S65511001001 - S65511999999) Straight Shaft Trimmer / Brushcutter SRM-210SB (08001001 - 08003129) Straight Shaft Trimmer / Brushcutter SRM-210SB (09007108 - 09999999) Straight Shaft Trimmer / Brushcutter SRM-210SB (S73012001001 - S73012999999) Straight Shaft Trimmer / Brushcutter SRM-210SB (08003130 - 08999999) Straight Shaft Trimmer / Brushcutter SRM-210SB (S80513001001 - S80513999999) Straight Shaft Trimmer / Brushcutter SRM-210SB (10001001 - 10001300) Straight Shaft Trimmer / Brushcutter SRM-210SB (10001301 - 10999999) Straight Shaft Trimmer / Brushcutter SRM-211SB (09001085 - 09999999) Straight Shaft Trimmer / Brushcutter SRM-211SB (06001001 - 06001203) Straight Shaft Trimmer / Brushcutter SRM-211SB (06001203 - 06999999) Straight Shaft Trimmer / Brushcutter SRM-225SB (S79312001001 - S79312999999) Straight Shaft Trimmer / Brushcutter SRM-211SB (09001001 - 09001084) Straight Shaft Trimmer / Brushcutter SRM-225SB (S79411001001 - S79411999999) Straight Shaft Trimmer / Brushcutter SRM-225SB (S79513001001 - S79513999999) Straight Shaft Trimmer / Brushcutter SRM-260SB (05001001 - 05001504) Straight Shaft Trimmer / Brushcutter SRM-260SB (05001505 - 05999999) Straight Shaft Trimmer / Brushcutter SRM-260SB (07001001 - 07001280) Straight Shaft Trimmer / Brushcutter SRM-260SB (07001281 - 07999999) Straight Shaft Trimmer / Brushcutter SRM-261SB (06001001 - 06999999) Straight Shaft Trimmer / Brushcutter PAS-225 (S59511001001-S59511003000) Gas Power Source Attachement PAS-225 (S59511003001-S59511999999) Gas Power Source Attachement PAS-225 (S59612001001-S59612022000) Gas Power Source Attachement PAS-225 (S59612022001-S59612999999) Gas Power Source Attachement PAS-225 (S86813001001-S86813999999) Gas Power Source Attachement PAS-230 (05001001-05999999) Gas Power Source Attachement PAS-230 (06001001-06999999) Gas Power Source Attachement PAS-230 (07001001-07999999) Gas Power Source Attachement PAS-230 (S67711001001-S67711999999) Gas Power Source Attachement PAS-230 (S75212001001-S7521999999) Gas Power Source Attachement PAS-230 (S82713001001-S82713999999) Gas Power Source Attachement PAS-266 (T44211001001-T44211999999) Gas Power Source Attachement PAS-266 (T44312001001-T44312999999) Gas Power Source Attachement PAS-266 (T44413001001-T44413999999) Gas Power Source Attachement PAS-260 (05001001 - 05999999) 24.5 cc Pro Attachment PAS-260 (06001001 - 06999999) 24.5 cc Pro Attachment PAS-260 (07001001 - 07999999) 24.5 cc Pro Attachment Pas-265 (S67911001001 - S67911999999) Pro Attachment Series Pas-265 (S67911001001-S67911999999) Pro Attachment Series PAS-225 (T44811001001 - T44811999999) Gas Power Source Attachment PAS-225 (T44912001001 - T44912999999) Gas Power Source Attachment PAS-225 (T45013001001 - T45013999999) Gas Power Source Attachment