1-2-3 Practical Blocks 23 Holes 1" x 2" x 3" Precision Steel 0.0001" 0.0002" 0.0003" 123 Jig Router Machine for Carpentry 40JEOOTDTYComits: Made of chrome vanadium steel materials, practical and . Grounding on all 6 sides of the block, accuracy and squares on all sides inside. 0001"-.0002".23 Holes Includes (5) 3/8-16 Threaded Holes for Fastening and (18) Unthreaded Holes Cross Drilling Design Allows for Efficient Use of Lighter Weight with Maximum Strength. Ideal for mechanics, carpenters, metalworkers and more. We offer 3 kinds of optional (A/B/C), you can choose one or more according to your needs. Specification: Material: Chrome Vanadium Steel Stainless Steel Size: About 76X50X2 5mm/2.99x1.97x0.98 inches Size B: About 25x76x5 0mm/0.98x2.99x1.97 inches Size C: About 25x76x5 0mm/0.98x2.99x1.97 inches Type: A/B/C Package Includes: 1x BlockNote: 1. Please allow 1-3cm errors due to manual measurement, please make sure you do not mind before ordering. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.