Direct Replacement Part: This replaces part numbers 4009 710 2106 and C3-2, ensuring compatibility with for 57 and for 52 models from 2020 onwards. Designed for seamless integration, this head restores performance.<br> Compatibility and Performance: Specifically designed for 57 (2020 On) and for 52 (2020 On) weed eaters, this C3-2 features a bump and feed mechanism that automatically feeds the nylon line with a simple tap action.<br> Advanced Feeding Mechanism: The C3-2 operates with a bump & feed system where the nylon line is fed automatically by tap action. This feature enhances ease of use and efficiency, making your trimming tasks quicker and smoother.<br> Versatile Line Options: Compatible with 2.0mm / .080inch diameter line, this double line is ideal for both trimming and mowing tasks. It offers flexibility in line choice, adapting to grass types and conditions.<br> <br> Colour:Black&White<br> Material:plastic<br> <br> Package Contents:<br> 1 x C3-2 (The color of the rope is random, no specified color is accepted)<br> <br> Only the above package content, other products are not included.<br> 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.