【Design 】- The fine-tuning head adopts 4PCS line hole design, and the line can be filled, making trimming flowers and weeds easier and faster. 【High quality 】- The main body is made of high-quality die-cast aluminum and the grass rope is made of nylon. Can ensure long-lasting durability. 【Easy to Install 】- Pass the nylon thread through the thread hole, tighten the screw with a wrench, and then adjust the cutting head. This allows you to easily complete the work and continue working quickly. 【Features 】It has the characteristics of practicality, compactness, small vibration, wear resistance and durability, and no noise to others. 【Application 】- The lawn mower fine-tuning head is suitable for pruning machines with a diameter of no more than 30 cm and is widely used in your green space and garden.