WJX Cartridge Needles is patent design make the needles run extremely stable and smooth, have the Lowest Tin solder to avoid chemical process to ensure safety.
Special Rebound – there is four special elastics that lighten the pressure the needles bar
Medical Grade LG PC – made by PC polycarbonate, Polycarbonate is colorless, transparent, heat resistant,impact resistant.
Original Design – WJX patent cartridges design achieve better hitting skins performance

Membrane System