Black & Decker 5104183-03 3P spool bump cap cover string trimmer NST2018 NST1024 Brand-new, genuine Black & Decker string trimmer cap, part number 5104183-03 Compatible with Black & Decker String Trimmers: NST1018, NST1024, & NST2018 (Types 7 & 8) Genuine OEM part Includes (3) replacement caps