Compatibility: Fit for Makita 18V battery sensor: DUR181, DUR181Z, DUR181RF, DUR180Z, DUR141Z, DUR140, DUR141. Alternative spool model: 196146-9. Replacement cover model: 195858-1, Alternative spring model: 233522. -0.is a replacement head for Makita brush cutter 【Material】: The replacement string is made of premium plastic, safe and environmentally friendly. The nylon string part is made of premium nylon material, imported from Germany. Flexible and durable, and the replacement shaft uses centrifugal force and aerodynamics to reduce air resistance and enable fast cuts. Easy Installation: Turn off the engine and remove the original shaft, replace the replacement shaft with the fine-tuning head, turn off the engine and remove the cover, and finally install the new cover. The package contains 3 spools + 1 spool cover + 1 spring. Excellent Workmanship: Professional CNC cutting and automatic winding are safer and faster than manual lift, reduce damage to the mower and do not jam when