FITS MODELS: Fits compatible with Ryobi One+ series cordless trimmer models. Spool model: RAC143. Compatible with RLT36B33 RY36LT33A-0.CONVENIENT: Tool-less installment, pops in and out of trimmer compatible with ease of use. Use centrifugal compatible withce and aerodynamics to reduce drag and achieve fast cutting.FLEXIBLE DURABLR MATERIALS: High-quality ABS spool durable polyamide nylon thread, flexible and long service life.EASY TO OPERATE: Auto feed system replacement spool help to ease the tedious work of hand-winding spools.PRECAUTIONS compatible with USE: Wear safety goggles and long pants when using this product to avoid injury from spilling lines. This cordless weed eater parts refill is only suitable compatible with young grasses. Strong weeds use other tools such as blades to trim.Colour: Black + fluorescent greenMaterial: ABS, NylonPackage Contents:6 x String Trimmer Spool LineOnly 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.