RS-136-bkp Fits for Black&Decker string trimmer models: ST1000, ST3000, ST4000, ST4050, ST4500, ST5000, GE600, ST200, ST300, ST400, CST800, ST6800. Spool model: RS-136 / RS-136-BKP / 143684-01. Cap model: 682378-02. 20ft 0.065 inches line string trimmer replacement spool compatible with Black&Decker spools models RS-136 / RS-136-BKP / 143684-01.Length 20 foot trimmer line provides a wider range of mowing area. 0.065 inches diameter wearable line supports fast cutting and longer lifetime.Replaces spool model: RS136, RS-136, RS-136-BKP, RS136BKP, 143684-01; Cap model: 682378-02; Replaces spring model: 68223500. The bump feed string trimmers spool line were made of premium quality raw material, ABS spool sturdy enough, nylon line string flexible, strong enough for long working life.RS-136 Weed Eater Replacement Spool also know as ST4500 Replacement Spool, Bump Feed Spool, automatic bump feed spool. for rs-136-bkp, rs-136 black and decker, rs-136 bump feed spool, rs-136 spool, rs-136 trimmer spool, black and decker bump feed spool rs-136-bkp, black and decker rs-136-bkp, black and decker rs-136.Precautions for use: Wear safety goggles and long pants when using this product to avoid injury from spilling lines. Unplug tool before changing, installing, or removing accessories. This cordless weed eater parts refill is only suitable for young grasses. Strong weeds use other tools such as blades to trim.Colour:blackMaterial:ABS, nylonPackage Contents:8 x String Trimmer Spool Line2 x Cap Cover2 x SpringOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.