This set is a must for any shop. Set includes 1 each: 3/8" diameter with .200" shoulder, 1/2" dia. combination with a point and .200" shoulder, 1/2" dia. with a .500" shoulder and 1/2" dia. combination with .200" shoulder and a .500" shoulder. Grizzly H5556 - 4 pc. Edge Finder Set 3 Shouldered, 1 Pointed