material: The band strap clamp uses a quality aluminum alloy frame with ABS and nylon components for durability and wear resistance. The strap length is about 4 m (157.5 inches), suitable for securing large workpieces. Four removable corner clamps: The ratcheting clamp includes removable plastic corners to lock various shapes. It adapts to irregular edges, and the levers allow quick adjustment and release. Nonslip handle: Ergonomic, nonslip plastic handle lets you squeeze up to four corners at once, reducing hand fatigue and improving control during clamping. Easy to use: Simple to position the workpiece by adjusting the handle. Ideal for gluing frames of different sizes. Lightweight and easy to transport and store. Practical applications: Picture frame assembly, cabinet or furniture framing, and general woodworking or craft projects requiring secure, adjustable clamping on irregular shapes.