SHB manufacture Spline Rollers for use on GROB Spline Rolling Machines. The rollers are manufactured out of best quality HSS Material in Grades like M42, ASP2030, ASP2052 & ASP 2060. Spline Rollers are the best tools to manufacture spline shaft component where Hobbing is not possible. Spline Rollers are the best tools for mass production of Splined Shaft Components. Two rollers located at 180 degree of each other and rotating around individual Axis form the splines