Usage Tips:Universal Compatibility - DWO1DT995 Replacement Head compatible with for cordless string trimmers Models: DCST920 DCST922 DCST925 DCST970 DCST990. Fit for 20V, 40V, 60V bump feed head. This feature provides customers with the convenience of using a single replacement head for multiple trimmers, saving them time and effort in finding the right fit. Enhanced Durability - Manufactured using high-quality materials, the DWO1DT995 ensures exceptional cutting efficiency, durability and resilience. These premium materials not only extend the product's lifespan but also consistent performance, even under challenging weather conditions. Hassle-Free Line Replacement - Say goodbye to the frustration of tangled lines! scientific aerodynamics, greatly improve cutting efficiency. The DWO1DT995 Replacement boasts a cutting-edge, science-based design that optimizes trimming efficiency. With its precision-calibrated components, this delivers superior cutting performance, resulting in neater edges and a more polished lawn appearance. Effortless String Replacement - the DCST920 replacement head streamlines the process of reloading trimmer lines. Without disassembly, you just turn the cap and the replacement line is loaded in seconds. Note:Due to different production batches, there may be slight differences in products. Nylon thread specifications:2.0mm round green thread Cutting head line length:20FT/6M Replacement model: For DWO1DT995 &DT20658QZ For lawn mower models DCST970, DCST922, DCST990, DCST920, DCST925, DCST991 Colour:Black Material:Plastic Package Contents: 1 * Only the above package content, other products are not included. Note: Light reflection 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.