Brand: Chway Color: Black Features: Perfect Fit: To avoid buying the wrong spool, please compare the size of your old spool before purchasing!!! Our spool: 2.16 in diameter, 0.86 in height. - It's 0.065" dual line replacement string trimmer spool. Only compatible with greenworks dual line string trimmer modesl: #2101602, #2101602A, #STBA40B210, #BST4000 ! Spool model : 2900719, cap model: 2958002 Important Note: Dual-line trimmer spools are NOT universal, These parts will NOT fit other Greenworks models. Please check the model number on your trimmer, not just the line size. ? Usually located on the label near the motor or battery port ? before placing your order 110 LBS Tolerable Weight: 0.065in. diameter, 18ft. length trimmer string provides 110 Ibs. tensile strength, our premium weed wacker string is stronger than the competition. Plus, its pliable and flexible design allows it to stretch and cushion on impact, making for more efficient cuts. Note: Dual line replacement string contains 1 line per layer, each line is 9 ft.in length, the total length of the two lines are 18 ft Better Cutting Performance: The indentation process is used to increase the contact are a between the trimmer line and the weeds, which improves the mowing efficiency and brings a smoother trimming experience. ln addition, the addition of an appropriate proportion of glass fibre to the spool significantly improves the hardness, abrasion resistance and heat resistance of the spool and cap, effectively extending the service life. This will be your right-handman Friendly Reminder: Ordering the wrong model may cause trimming issues. If you're not sure, please contact us before purchasing! model number: GW6+1 Part Number: GW6-1 Package Dimensions: 7.1 x 4.9 x 1.5 inches Listing and template services provided by inkFrog