Dimensions- 2" x 4" x 6", 18.3 lbs. weight Cross drilling design allows for efficient use of lower weight with maximum strength Accuracy and squareness on all sides within 0.0002" Made of accuracy-grade tool steel hardened and ground on all 6 sides of block Heat treated and case hardened to HRC 57-62 Cross drilling design gives minimum weight and maximum strength Accuracy with squareness on all sides within .0002" per inch 23 holes consists of 5 tapped holes that are 5/8"-11 for clamping and 18 untapped holes Hardened and accuracy Ground on all 6 sides of each block Product Dimensions 2"*4"*6",18.3 lbs. weight Brand WFLNHB Manufacturer? ?WFLNHB Item model number? ?Does Not Apply Product Dimensions? ?8.66 x 6.5 x 2.36 inches; 18.3 Pounds 6059751