Listings advise checking your trimmer’s owner’s manual to identify the correct part number and to follow the manual for proper installation.
The listings specify a 0.065-inch cutting line for the replacement spools.
Listings show single spools and multi-packs; the explicitly listed pack counts include 1, 3, 4, and 10.
Many listings indicate compatibility with 18V, 24V, and 40V cordless string trimmers.
Listings commonly display the OEM replacement part number (often labeled “Replacement Part #”) and advise consulting your owner’s manual to confirm the correct part number and installation.
Across listings, heights range roughly from 1.0 to 1.88 inches, widths from 2.5 to 32.5 inches, and weights from 0.06 to 2.13 pounds.
Product details list the spool material as metal.
Listings use phrases such as “Genuine … replacement part” and “Genuine OEM Replacement Part.” Many listings also include a note to consult the owner’s manual to confirm part numbers and installation.