Armor-Tool STC-HH50 Auto-Adjust Hold Down Toggle Clamp Low Profile with Horizontal Base Plate Automatically adjusts to variations in material thickness while maintaining clamping pressure. Less Clamp adjustments, changeouts; fewer Clamps, fixtures, workstations Adjustable clamping pressure of 25-550 lbs. Within 0-1.9/16" range. Holds consistent pressure over time; ideal for glue ups Durable construction: nickel plated heat treated carbon steel. Handle closes in horizontal position to minimize obstructions. Pivoting spindle head accommodates variations in material shape Horizontal mounting base contains adjustable mounting holes that accommodate most standard Toggle mount patterns Large soft grip handle for comfortable grip and ergonomic advantage