Measures .213 x .253 x .630 inches long with a 10-32 thread and a ball spring 10 Series compatible Made out of 304 stainless steel with a stainless finish Comes with a ball spring to better position and hold within the t-slot The roll-in T-nut with ball spring is a fastening option that loads from the profile ends or side, which is helpful for applications where the ends are inaccessible. The ball spring holds the T-nut in the T-slot, even when the profile is in a vertical position, simplifying the assembly process.