100 percent brand new and high quality Made of high-quality chrome vanadium steel materials, practical and durable. Ground on all 6 sides of block, accuracy and squareness on all sides within .0001"-.0002". 23 holes includes (5) 3 or 8-16 threaded holes for clamping and (18) untapped holes Cross drilling design allows for efficient use of lower weight with maximum strength. Perfect for machinists, woodworkers, metalworkers, and more. We offer 3 kinds optional (A or B or C), you can choose one or more according to your needs. Specifications: Material: Chrome Vanadium Steel A Size: approx 76X50X25mm or 2.99x1.97x0.98 inches B Size: approx 25x76x50mm or 0.98x2.99x1.97 inches C Size: approx 25x76x50mm or 0.98x2.99x1.97 inches Type: A or B or C Note: 1.Please allow 1-3cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1x Block Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store