1. DUROCK Piano Plate Mount Stabilizers Designed for MX-compatible Plates. 2. Gold-plated Stainless Steel Wires -- Oxidation Resistance and Nice Appearance. 3. Black Housing with Original White Stem?? specially made to reduce stripping of the threads. 4. Polymer Nylon outer Casing and Stem/Slider-- Higher Hardness. 5. Fits for 100% Full Keyboard Set( 2ux7?? 6.25 ux1?? 7u Wirex1)