Project KICS Special Spline Style Lugs to bolt on Project Kics Wide Thread Spacers to your car. For use with Project Kics 15mm thick wheel spacers. New Spline Style Project Kics 15mm Spacer spline lugs are only ~12.4mm tall and ~20mm diameter 12×1.50mm. Uses Special Spline key to tighten and remove. Special lugs for 10, 20, 25 and 30mm thick Project KICS spacers also available. Also available in 12×1.25mm. Project Kics Special Spline lugs lugs are Sold individually. Special order.