This Clocking Ring is machined out of 3/8" steel to allow maximum spline engagement, Strength and Durability. Our clocking rings are precision CNC machined for accurate bore alignment. This 5 hole Clocking Ring is designed to clock the Chevy S10 Transfer Case UP or Down 10, 16.5, 23 Degrees.
**The NP231C Transfer Case from the S10 came with two different Pilot Bore sizes 4.125" (95 and Older) and 4.89"(96 and Newer) please verify your transfer case before ordering.**