Open polymer plain linear bearing Mounted Inside Dia 25 mm Material Anodized Aluminum Accelerated Speed 8 Meters/Second Bearing Type Ball Bushing Body Width (In.) 78 mm Dimension a 3.071 in Dimension A1 1.535 in Dimension A1 (In.) 1.535 in Dimension A (In.) 3.071 in Dimension B 2.638 in Dimension B (In.) 2.638 in Dimension d 0.984 in Dimension E 1.575 in Dimension E1 2.362 in Dimension E1 (In.) 2.362 in Dimension E (In.) 1.575 in