Polymer plain linear bearing Mounted Inside Dia 16 mm Material Anodized Aluminum Accelerated Speed 8 Meters/Second Bearing Type Ball Bushing Body Width (In.) 53 mm Dimension a 2.087 in Dimension A1 1.043 in Dimension A1 (In.) 1.043 in Dimension A (In.) 2.087 in Dimension B 1.693 in Dimension B (In.) 1.693 in Dimension d 0.63 in Dimension E 1.024 in Dimension E1 1.575 in Dimension E1 (In.) 1.575 in Dimension E (In.) 1.024 in