This is a must have set for any shop. 4 different styles to cover any setup problem! Set includes 1 each: 3/8" diameter with point, 3/8" dia. combination with a point and .200" shoulder, 1/2" dia. with a point and 1/2" dia. with .200" shoulder. Grizzly H2939 - 4 pc. Edge Finder Set with 3 Pointed, 1 Shoulder