Mascot spring steel wire flexible shaft core and various mechanical steel wire flexible shaft assemblies; Material: 70, 65 manganese high carbon spring steel wire; 304, 316 stainless steel wire Structure: it is composed of 2-12 layers of plain wire and 3-10 high-strength steel wires in each layer. Twist direction: s (left rotation), Z (right rotation). Color: golden yellow, black, white. Scope of application: automobile, motorcycle, sports car, speedometer, counter, tachometer, electric tools, lawn mower and various Mechanical rotation. Performance: smooth, flexible, high elasticity, low vibration.