These tools are a collection of photo-etched blades (1.4mm 1.5mm 1.6mm 1.7mm 1.8mm 2.0mm 2.2mm 2.4mm 2.6mm 2.8mm 3.0mm) designed to create pivot holes on model kits:
Use a regular 0.5mm drill bit and drill the central point where the pivot hole will be;
Pin the tip of the blade to this central pin, then spin the blade to cut through the surface;
Add details using Neron N-004, or other MADWORKS large selections of detail-up parts.
Suggestion: Attached the spin blade to a drill-bit handle. This way is easier to operate