Features:*AF-100 Replacement Spool Line and Cap RC-100-P with Spring for Black&Decker *Suitable for most Black and Decker brand single line automatic feed trimmers and edgers*30-feet replacement line is factory wound for a superior feed*Each spool contains 30 feet of 0.065 inch diameter line*Adopts centrifugal force to feed the trimmer line as it is needed*Avoids time spent hand-winding string trimmersSpecifications:*Material:Nylon*Color:Black(As Pictures Show) *Line length:30ft(Approx.)*Diameter:0.065 inch(Approx.)*Fits multiple string trimmer models: GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7700, CST1000, CST1200, CST2000, MTC220, MTE912, NST2018, NST1118, NST2118, LST220, LST300, LST400, LST420, LST136Package Contents:1*Spool Line1*Replacement Cap 1*Replacement Spool SpringNote:The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.