Nickel copper alloy; 2.187 in. @od; 1.375 in. Lg; threaded internal 1.767-18 rh 0.562 in. Thread lg; 0.250 in. Threaded hole for set screw in unthreaded end; 1.718 in. Id unthreaded end; 3 unthreaded holes 0.281 in. Diameter equally spaced 0.250 in. From unthreaded end