Premium stainless steel 304 material, rustproof durable to use. Toggle latch clamp is adoption of unique self-lock design ,prevent the latch accidental opening. Adjustable latch ,locking force is adjustable. Spring to reduce vibration & apply prepressing. Spring loaded with excellent tension, easy to install. Widely used in electrocar, monitoring equipment, food equipment, minitary box, insulated case, toolbox, BBQ grill, aluminum box, and wooden case. Easy to install by screws, and please note that screws are not included here. Specification:Material: SUS304 Stainless SteelMain Body Size: 65mm x 41.5mm / 2.56" x 1.63" (L*W)Hook Size: 28mm x 20mm x 1.4mm / 1.10" x 0.79" x 0.055" (L*W*T)Mounting Hole Diameter: 4.5mm / 0.177" Package Content:2 x Self-locking Buckles