- DUROCK V1 PCB Mount Stabilizers are designed for MX-compatible PCBs. 2. Translucent Smokey housings and the Golden Wires set gives your board a clear and golden edge. 3. The outer casing and parts, specifically made to prevent stripping of the threads, different from regular Cherry PCB mount stabilizers. 4. Polymer Nylon outer Casing- Higher Hardness, Gold-plated Stainless Steel Wires and Screws- Oxidation Resistance. 5. Pre-clipped Insert method, no need to clip the feet. Fit for 60 Keyboard Set and 87 Keyboard Set. ( Both 6.25u and 7u Wire included )