Standard Linear Bearing Inside Dia 16 mm Outside Dia 26 mm Material Anodized Aluminum Accelerated Speed 14 Feet/Second Between Grooves (mm) 22 Color Blue Dimension B 26 mm Dimension C 36 mm Dimension C1 - Dimension C2 - Dimension d - Dimension D1 - Dimension E 60 in Dimension F - Dimension G - Dimension L - For Use With Support and Feather Rails Inside Dia Tolerance +/-0.001 Length 36 mm