Specification Brand : Lawnmowers Parts BulletPoint1 : SRM-210, SRM-210I, SRM-210SB, SRM-210U, SRM-225, SRM-225I, SRM-225SB, SRM-225U, SRM-230, SRM-230U, BulletPoint2 : This head is a Echomatic pro trimmer head. This head comes pre-loaded with 0.95" diameter ECHO line. BulletPoint3 : Part Number #21560031 BulletPoint4 : BEFORE THE PURCHASE , IF YOU HAVE ANY QUESTIONS ABOUT THE MODEL, SPEC AND SERIAL NUMBERS , PLEASE SEND US A MESSAGE BulletPoint5 : FREE EBOOK - which will be emailed to you within 24 hours of your purchase. ExternallyAssignedProductIdentifier : 6496605679538 ExternallyAssignedProductIdentifier1 : 0669583893647 ExternallyAssignedProductIdentifier2 : 669583893647 ItemName : New 21560031 (Set of 3) ECHOmatic Pro Trimmer Head Echo SRM Trimmers 3 Heads!!! + Free ebook - Your Lawn & Lawn Care - ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 35.53 inches ItemPackageDimensions_Width : 3.5 inches ItemPackageQuantity : 1 ItemTypeKeyword : string-trimmer-replacement-parts Manufacturer : Lawnmowers Parts NumberOfItems : 1 PartNumber : C1U-W19 PowerSourceType : gasoline ProductDescription : Part Number #21560031 This head is a Echomatic pro trimmer head. This head comes pre-loaded with 0.95" diameter ECHO line. it can fit up to .155" line. These heads fit ALL ECHO straight shaft trimmers, (this includes, but is not limited to) SRM-210, SRM-210I, SRM-210SB, SRM-210U, SRM-225, SRM-225I, SRM-225SB, SRM-225U, SRM-230, SRM-230U, SRM-260, SRM-260S, SRM-261, SRM-261S, SRM-265, SRM-266, SRM-311S, SRM-340, SRM-400U ProductSiteLaunchDate : 2018-11-20T08:00:00.000Z UnitCount : 1