Size 12.9mm : cnc lathe round edge, CNC star Design, can be used as standard 13mm roller
Size 11.5mm : cnc lathe round edge, CNC star Design, can be used as stabilizer for (12-13mm double layer / 13mm roller)
Tamiya 15437 CNC Star Design/Color Anodizing (Blue/green/black/purple/gold) 12.9mm/11.5mm Round Edges
