Specification Brand : Atjocxe BulletPoint1 : Includes:(Like it shows in the picture) 1x String Trimmer Head BulletPoint2 : TRIMMER HEAD DIAMETER: 3-3/4", M10mm x 1.25mm LH threaded BulletPoint3 : for ECHO PAS210 PAS211 PAS225 PAS225VP PAS225VPB PAS230 PAS231 PAS260 PAS261 PAS265 PAS266 PAS280 PAS2100 PAS2400 PAS2601 power source attachment BulletPoint4 : HOW TO RERESTING:You don’t take it apart. You spin it until the arrow lines up with the hole. Then you just feed about ten feet of line on each side and spin it. It spools up as you spin. If you have leftover line inside the spool you will need to take the unit off to empty the line. You are supposed to be able to press-in the panels on the side enough to clear the retaining ledge to free the top of the unit to pull out the spool (you have to do this on both sides) BulletPoint5 : NOTE: This Head Is Strictly For Straight Shaft Model Trimmers not fit Curved Shaft Trimmer Color : tqqq-1296 ExternallyAssignedProductIdentifier : 6214557837178 ExternallyAssignedProductIdentifier1 : 0707618729919 ExternallyAssignedProductIdentifier2 : 707618729919 GpsrSafetyAttestation : 1 ItemDisplayWeight : 250 grams ItemName : Atjocxe Trimmer Head for Echo Weed Eater Speed Feed 400 PAS-225 GT-2200 SRM-225 SRM-2620 Grass Trimmer, Shiandaiwa T195S T220 T222 T230 T231 Trimmer ItemPackageDimensions_Height : 11.0998 centimeters ItemPackageDimensions_Length : 6.8072 centimeters ItemPackageDimensions_Width : 10.8966 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : string-trimmer-replacement-parts Manufacturer : Atjocxe Material : Grass ModelName : Greenworks ModelNumber : R-175 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : R-175 PowerSourceType : gasoline-powered ProductDescription : Includes:(Like it shows in the picture) 1x String Trimmer Head TRIMMER HEAD DIAMETER: 3-3/4", M10mm x 1.25mm LH threaded for ECHO PAS210 PAS211 PAS225 PAS225VP PAS225VPB PAS230 PAS231 PAS260 PAS261 PAS265 PAS266 PAS280 PAS2100 PAS2400 PAS2601 power source attachment HOW TO RERESTING:You don’t take it apart. You spin it until the arrow lines up with the hole. Then you just feed about ten feet of line on each side and spin it. It spools up as you spin. If you have leftover line inside the spool you will need to take the unit off to empty the line. You are supposed to be able to press-in the panels on the side enough to clear the retaining ledge to free the top of the unit to pull out the spool (you have to do this on both sides) NOTE: This Head Is Strictly For Straight Shaft Model Trimmers not fit Curved Shaft Trimmer