These are USA manufactured hi-performance 4140 Chrome moly forged induction heat treated alloy axles supplied with cut splines and 10mm heavy duty flanges. Drilled and tapped to suit your stud pattern with an option of 7/16″, 1/2″, 5/8″, M12 screw in wheel studs.

A9-23S-870 – AXLE FLANGED USA ALTRA 9 4140 23 SPLINE (35.02mm) ACCESS HOLE – EACH

A9-25S-850 – AXLE FLANGED USA ALTRA 9 4140 25 SPLINE (35.02mm) ACCESS HOLE – EACH

A9-28S-870 – AXLE FLANGED USA ALTRA 9 4140 28 SPLINE (35.02mm) ACCESS HOLE – EACH