Compatibility: For use with Makita 18V battery chargers: DUR181, DUR181Z, DUR181RF, DUR180Z, DUR141Z, DUR140, DUR141. Replacement spool model: 196146-9. Replacement cap model: 195858-1, reciprocating spring model: 233522-0. This is the replacement head for the Makita lawn mower. Dimensions: Makita series replacement shafts have a barrel length of 8.3 m, a replacement shaft diameter of 6.2 cm, a height of 4.15 cm, and a shaft diameter of 1.60 mm. The replacement cap has a diameter of 7.55 cm. The height is 3.3 cm. 【Material】: The replacement rope is made of high-quality plastic, which is safe and environmentally friendly. The nylon rope part is made of high-quality nylon imported from Germany. Flexible and durable, the replacement spindle uses centrifugal force and aerodynamics to reduce air resistance and achieve fast cutting speeds. Installation is simple: stop the engine and remove the original shaft, replace the replacement shaft with the trimmer head, stop the engine and remove