spline shaft
Features:
1) Material: 1045, 5120, 8620, 5140, 4140, 1117, 1214, 1215, 303, 304, 416, 420

2) O.D.: 5 - 100mm

3) Length: 20 - 1,000mm

4) Heat treatment: HRC58-62

5) Case depth 0.25 - 0.35mm, 0.50 - 0.80mm, 0.75 - 1.00mm