Grizzly H5613 All Angle V-Block w/clamp - Small Crafted to maximize the accuracy of just about any setup for grinding and milling Hardened better than 45 on the Rockwell hardness scale for durability It is supplied with 3- 3/8&#34;-16 threaded holes so you can easily mount it to fixtures, jig plates or angle plates and hold round stock up to 1 1/2&#34; in the horizontal or vertical positions Measures 3 5/8&#34; X 1 7/8&#34; X 1 7/8&#34; Stirrup is supplied with adjustable clamp stop