This is a 150-meter spool of monofilament fishing line in a bright chartreuse (green-yellow) color. The diameter is 0.235mm, which typically corresponds to around 8-12 lb test strength, but always check the exact breaking strain for your needs. The high-visibility color is great for tracking your line in low light or murky water, and it's less visible to fish underwater than it is to you. Suitable for freshwater and light saltwater fishing, spinning, baitcasting, or as backing line. Monofilament is flexible, easy to handle, and has good knot strength. A solid, affordable option for re-spooling your reels or keeping as backup. Make sure the diameter matches your reel's specifications. A fishing essential that won't break the bank.