1: The whole is rounded, without exposed grooves.
2: The traditional hole track is placed on its side, and the track can be replaced to adjust different feel and sound.
3: The track is fixed by magnetic suction, which is more convenient for disassembly and assembly.
Non-metallic paragraph board and non-metallic dense board: 0.25*3*5 gold-plated spring + spring top + 2.778 mm pom bead
Non-metallic super-dense board: 0.25*3*5 gold-plated spring + spring top + 3 mm pom bead