6888-2 INSIZE Roller Bearing V-Blocks Set 6x3.1INSIZE Roller Bearing V Block Set These precision made V Block Sets are designed to hold round material, and are suitable to hold heavy workpieces. With a Runout accuracy of 197in and Parallelism of bearings to bottom at 472in, your workpieces will not get damaged due to mis aligned bearings. Features include Overall Size: 5. 9" x 3. 1" x 3. 9" Load Capacity: 2200 Lb Product Dimensions Diameter of Bearings ( D ): 1. 85" Range of Shafts ( d ): 0. 20"