Heavy Duty Workbench Vise Screw with 3 TPI Acme Threads 17 Inch Capacity

[DURABLE]: The structure of the flange and threaded nut is durable, and is made from high-strength cast iron with black powder coating. [PRECISION MACHINING]: The lead screw is precision-machined so that it can run smoothly when it is turned on and off. [SPECIFICATIONS]: The lead screw is 1-3/16 inches in diameter, with single-lead Acme threads and 3 threads per inch.  [CLAMPING CAPACITY]: The clamping capacity is 17 inches (less the thickness of the jaw) and the total length is 22.8 inches. [INCLUSIVE SIZE]: It will accept a 1-inch diameter handle (not included).