Blomiky 4 Pack 12 * 2.6mm Locknuts Screws 12mm Hex Optical Axis and M4 Locknuts for 1/10 1/12 1/14 1/16 1/18 Scales HBX RC Car 16890A 18558 18559 18208 RC Trucks / 16890A Screw Hex Pin Nut

["Hex Dimensions: 12mm, Screw dimensions:12*2.6mm, M4 lokcnuts:inside hole diameter:4mm,outside 7mm.","Package include: 4 pack 12*2.6mm screws,4 pack 12mm Hex, 4 Pack stainless optical axis, 4 pack 4mm M4 Locknuts.","12*2.6mm screw locknuts suitable for Hyper Go 1/18 scales 18208 18206 RC Trucks. 12*2.6mm screw locknuts suitable for Haiboxing 1/18 scales 18858 18859 18858E 18859E 1/16 16890A 16890 16889 16889A RC Trucks. 12*2.6mm screw locknuts suitable for Xinlehong 1/16 scales 9135 9136 9137 Remote control vehicles.","12mm Hex and Optical Axis Pins and M4 locknuts suitable for most 1/10 1/12 1/14 1/16 1/18 1/20 scales RC Vehicles Cars.","12*2.6m Screws locknuts and M4 locknuts maybe only one kind suitable for your RC Trucks.","Locknuts screws Hex Pins Suitable for some kind of 1/10 1/12 1/14 1/16 1/18 scales Remote Control Cars, make sure the dimensioins suitable for your RC Cars before buying."]