Ball Spline Nut Type Ball Spline Inside Dia 28 mm Outside Dia 45 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 SSP30S Inside Dia Tolerance +0/-0.021mm Maximum Operating Temperature 176 Degrees F Outside Dia Tolerance +0/-0.016 mm