Compatibility: This String Trimmer Line Spool Is Designed To Be Compatible With Worx Wa0010 Cordless Trimmers. For Wg150, Wg15, Wg151.5, Wg152, Wg153, Wg154, Wg155, Wg155.5, Wg156, Wg157, Wg160, Wg160.1, Wg160.2, Wg163, Wg163. 65, Wg. 175, Wg180.High Quality Abs Spool And Durable Polyamide Nylon Line. Nylon Lines Are Soft And Flexible, Allowing The Lines To Stretch And Cushion When The Hard Surface Hits.Auto Feed System Replacement: Replacement Spool System Eliminates Time Spent Per Manual Brush Cutters. Each Replacement Spool Is Pre-Wound And Can Be Replaced Easily In Seconds.Use Centrifugal Force And Aerodynamics To Reduce Drag And Achieve Fast Cutting. Aerodynamic Shape Allowing Less Drag For More Efficient Cuts. Soft And Flexible Allowing The Line To Stretch And Absorb Impact With Hard Surfaces. Package Contents: 12 Packs Of 3M X 1.65Mm Line Spools And 2 Compatible Spare Caps With Worx Trimmers. Coils For Wa0010 And Caps For Wa6531 Gt.