Non maring non marring hard plastic frame jaws protect surfaces during tightening Hand threaded screw with a screw handle lets you tighten the clamp easily Clamping aid for irregular surfaces with a screw handle to increase pressure by turning Ideal for Picture Frame, Cupboard, Drawer or any odd shape Includes four removable plastic clamp blocks for versatile use 2-3 practical use scenarios - Securing backings, glass or trim on picture frames during glazing or repair - Holding cabinet doors or drawer fronts steady during assembly or glue up - Clamping irregular or odd shaped objects for alignment and installation Specifications at a glance - Material: hard plastic frame jaws - Operation: hand threaded screw with tightening handle - Compatibility: designed for irregular surfaces and odd shapes - Accessories: includes four removable plastic clamp blocks - Primary applications: picture frames, cupboards, drawers, and other non standard shapes