AH1531 - EGO56V Rapid Reload+ 38cm Anti Clockwise Line Trimmer Head for ST1530E & STA1500Trimmer head holds up to 4m of 2.4mm line. As an upgrade to EGO's Rapid Reload String Trimmer Head, the Rapid Reload+ Trimmer Head allows you to insert line from any angle, no need to line up the green lines before you insert the line. A nice upgrade to make the #1 pain point in line trimmers easier! Compatability: ST1530E - EGO 56V 38cm Rapid Reload Anti Clockwise Brushless Line Trimmer SkinSTA1500 - EGO 56V Multi Tool 38cm Rapid Reload Line Trimmer AttachmentFeatures & Benefits: Any Insert – No need to align the eyelet and spool before inserting the line, easy to use Free Rotating Bump Cap – less load; better runtime Cap twist to rewind – no tangle line during rewinding Takes both 2mm & 2.4mm line – covers homeowners and pro users Genuine EGO parts ensure compatibility, quality and performance