• The 644 replacement blade assembly works with some Dahle 500, Dahle 507 and Dahle 508 personal rotary trimmers. Please refer to the notes below before purchasing
• This product is for the black assembly for the square support bar (sold separately)



• Inspect your existing trimmer and take stock of:
• The shape of the blade assembly support bar (either round or square)
• The color of the blade assembly that you're replacing (either black or gray)



• Next, reference the table to determine which assembly model is compatible with your trimmer.

Please note: This product is considered a consumable product and cannot be returned once it has been delivered.