About this item【MATERIAL】The string trimmer head is made of 100% brand new and high quality material. stable characteristic and high durability. And, the trimmer head promises great durability while reducing the risk of breaks or cracks.【FUNCTION】The weed eater head replacement is equipped with 10,000 rpm max. Meanwhile, the trimmer head will solve stuck trimmer head, the trimmer does not spin, or the threads strip.【ATTENTION】Note: 1. please allow 0~1 inch error due to manual measurement. thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.【100% WARRANTY】We promises every customer a 100% shopping satisfac.