High-quality materials: The frame clamps are made of high-quality aluminum alloy + ABS + high wear-resistant thick nylon, and the length of the nylon strap is about 4m, this which can meet your working needs 4 Detachable Corner Clamps: The corner clamps can be adjusted to handle multiple polygon angles. Tighten further with screws. To wrap the object, rotate the handle to increase the clamping pressure, saving time and effort Ergonomic design: With the non-slip triangle-shaped plastic handle, you can clamp up to four corners at the same time. Joystick for quick adjustment and release for easier work Easy operation: place the item in the corner of the belt tensioner and tighten the belt by turning the handle until the item is well locked between the corners Handy tool: the corner clamp ensures uniform and constant pressure without damaging the surface of the blank. Excellent corner conformability, can be used for frames, drawers and other irregular items