Black and Decker NST1018 NST1024 LST1018 Weed Eater Spool Cap Cover 5104183-03 Genuine OEM Authentic Black & Decker Trimmer Spool cap cover Replaces the following part numbers: 5104183-03, 510418303 Fits the following models If you are unsure, please send us your model and type number and we will be happy to help! : LST1018 Type 1 18V String Trimmer, NST1018 Type 1 18V String Trimmer, NST1024 Type 1 24V String Trimmer , NST2018 Type 1 18V String Trimmer, NST2018 Type 2 18V String Trimmer