General description This 4 Pack Replacement Line Spools set is designed for use with Makita 18V DUR181Z/DUR181RF/DUR181 grass trimmers. It includes 4 spools, 1 spool cover, and 1 spring, providing everything you need for efficient lawn care. Technical specifications Replacement spool model: 196146-9 Replacement cap model: 195858-1 Reciprocating spring model: 233522-0 Barrel length: 8.3 m Replacement shaft diameter: 6.2 cm Height: 4.15 cm Shaft diameter: 1.60 mm Replacement cap diameter: 7.55 cm Replacement cap height: 3.3 cm Compatibility and accessories Compatible with Makita 18V battery chargers: DUR181, DUR181Z, DUR181RF, DUR180Z, DUR141Z, DUR140, DUR141 Includes 4 spools, 1 spool cover, and 1 spring Installation Stop the engine and remove the original shaft Replace the original shaft with the new trimmer head Stop the engine and remove the cover Install the new cover Usage Designed for cutting grass and weeds with ease Flexible and durable, utilizing centrifugal force and