1.Adopt 3D printing technology for integral molding, the bracket itself extends out of the shrapnel structure, simplifying the spring assembly process 2. Lightweight design, more convenient to carry out. 3. The hollowed-out design of the handle, and the magnetic attraction function is added at the bottom, which is convenient for storage. 4. Multi-layer curve shape on the handle, more comfortable to hold, and with anti-skid function.