Check the listing for details. WEN 10423 3 x 2 x 1-Inch Steel-Hardened Precision 123 Blocks, Two Pack. Condition: New. Listed at 21.18 USD. Remember when you could calibrate equipment, space workpieces, and collect exact measurements all with one tool? Maximize accuracy with the WEN 1-2-3 Blocks. With one side measuring exactly 1 inch, one side at exactly 2 inches, and a third side at exactly 3 inches, you’ll be able to ensure accuracy on every project. Made from heavy-duty hardened steel, the WEN 1-2-3 Blocks have been machined to be perfectly square, with 5 tapped holes (3/8-16 UNC) for bolting, drilling, hammering, or whatever else you need them for. This pack comes as a set of two, turning your 1-2-3 blocks into 4-5-6 blocks. Remember when you could have faith in your measurements? Remember WEN. Features:Perfect for machinists, woodworkers, metalworkers, and moreEach block measures 3 by 2 by 1 inches in sizeFeatures 5 threaded 3/8-16 UNC cross-drilled holesCalibrate equipment, space workpieces, or collect exact measurementsIncludes a set of two 1-2-3 blocks