The steel pin on this clamp is shaped to fit snugly into a pocket hole, securely anchoring one workpiece against the other for easy assembly. Just drive a screw into an adjacent pocket hole while the Right Angle Clamp holds the piece steady for you. Specifications Clamping Capacity: Materials up to 3 1/8 (79 mm) Reach: 5 (127 mm) Adustment Knob: Provides eay-to-regulate clamping pressure Handles: Ergonomic padded grips prevent hand fatigue Clamp Body: Highly durable, all-metal construction Compatible With: Design Reaches into pocket holes on the inside or outside of 90 degree case assemblies Includes Kreg KHC-RA Automaxx Right Angle Clamp (2-Pack)