Project Kics R40 lug nuts in black are available as a 16+4 kit with 16 standard nuts and four locking nuts sized for 12x1.25 threads. The kit is intended to provide a full wheel fastener complement where both regular and locking lug nuts are required, offering a consistent black finish and the declared thread specification for compatibility.
Project Kics 12x1.25 R40 Lug Nuts - Black (16+4 Locks)