1xRC-065-P Spool Cover,Compatible with BLACK+DECKER String Trimmer-GH710, GH700, GH750 Compatible Black and Decker original model part# DF-065 / DF-065-BKP, 90517175 Each spool is pre-wound with a 36 foot, 0.065 inch diameter, high-strength, durable nylon thread Replacement for Black and Decker spools by the CNC machine cutting and winding, automatic line change. Manual winding is cumbersome and can easily get stuck during use, which can cause damage to the string trimmer Quality Assurance:If you have any quality problems, please feel free to contact us, we will provide appropriate solutions within 24 hours THTEN DF-065 String Trimmer Spools Compatible with Black and Decker GH710 GH700 GH750 RC-065, DF-065-BKP Weed Eater Refills Line 36ft 0.065" Auto-Feed Dual Line Edger+ RC-065-P Spool Cover Cap 3+1