DUROCK V2 Stabilizers are PCB mount screw-in Stabilizers that feature a patent design and precision upgrade models to totally avoid wire drop out. The V2 Stabilizers Stems / Sliders are Pre-clipped design, no need to clip the feet for fast & easy set up. Well selected Premium Polymer Nylon materials, the Stainless Steel Wires and hardware are sourced from Korea and with nice solid coating to prevent Oxidation.