Ball Spline Nut, Type Ball Spline, Inside Dia. 23 mm, Outside Dia. 37 mm, Material Carbon Steel, Accelerated Speed -, Between Grooves (mm) -, Dimension B -, Dimension C -, Dimension C1 -, Dimension C2 -, Dimension d -, Dimension D1 -, Dimension D (In.) -, Dimension E -, Dimension F -, Dimension G -, Dimension L -, Dimension T -, Dimension W -, For Use With SSP25S, Inside Dia. Tolerance +0/-0.021mm, Maximum Operating Temperature 176 Degrees F, Outside Dia. Tolerance +0/-0.016 mm