INSIZE 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 197µin and Parallelism of bearings to bottom at 472µin, your workpieces will not get damaged due to mis-aligned bearings. Features include... Overall Size: 5.9" x 2.4" x 3.9" Load Capacity: 1100 Lb Product Dimensions... Diameter of Bearings ( D ): 1.65" Range of Shafts ( d ): 0.98" - 2.76" W1: 0.87" W2: 1.73" h1: 0.79" h2: 3.35" h3: 0.47" L1: 3.94" S: 2.36"