DANA SPICER 3-40-1381 SPLINE Fits 4 inch .083 wall Driveshaft tubing 1.562 inch Diameter with 16 Spline DANA SPICER SPLINE 3-40-1381 Fits any series 16 Spline SLIP YOKE designed for 1.562 inch diameter spline Fits TUBE DIAMETER = 4 inch OUTSIDE TUBE Diameter Fits TUBE WALL THICKNESS = .083 inch Tube wall thickness Major SPLINE Diameter = 1.562 SPLINES = 16 K = 6.940 L = 3.0 R = 5.810 NOTE: This spline is typically used for 1410 and 1480 series driveshafts.