1[High Quality Material] Made of high quality nylon materials, strong and durable, not easy to break, breathable, comfortable, and reduce fatigue. 2[Adjustable Length] With a fixed clip, you can adjust it to a comfortable length. You need to manually pull the buckle onto the shoulder strap. The strap is suitable for most people. 3[Advantage Of Strap] Suitable for all machine sizes, reducing fatigue and arm pain. It can share the weight of trimmers, leaf blowers, multi head systems, etc. 4[Easy To Install And Use] First unfold the interface strap, adjust the port that fits the size of the machine, then adjust the length of the shoulder strap, and finally fix it on the machine. 5[Wide Range Of Application] One piece shoulder strap is designed with non slip glue and its interface size can be adjusted at will, which is suitable for all machine sizes, and can be used as thread cutting machine, leaf blower, multi head system, etc.