3-Hole Removable Drill Guide:Lets you make perfectly placed pocket-holes in various material widths and thickness', without ever having to release the clamp and reposition the work piece 1/8" incremental settings for materials from 1/2" to 1-1/2" thick (1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2")100% lifetime manufacturers warranty on drill guideMinimizes drill torque, increases the longevity of your drill bits, and helps maintain a cleaner shopLarge Clamping Recess:Makes it easy to secure your jig to your workbench using multipurpose Face Clamps