• The part number is RS-136-BKP
• The wire adopts high-quality nylon materials, anti-tear and durable to use
• Durable and wear-resistant so the spool is replaced less often
• For optimal and precise trimming results, great for mowing lawns
• Convenient to change, easy to install in a few seconds 

Specification:

• Nylon rope: 1.65mm round in white
• Length: 20ft/6.1m
• Product size: 60*50mm
• Compatible model: for Black&Decker ST4500/ST5000/ST1000/ST3000/ST4000/ST4050/GE600/ST200/ST300/ST400/CST800/ST6800