This set of four heavy-duty stage lighting clamps is a must-have for any DJ or stage performer. Designed with a compact and unique appearance, these clamps are made from high-quality aluminum alloy and are capable of supporting a maximum load of 150kg/330lb. The clamps are suitable for use with truss/engineering frame 40-52mm in scope of application and can fit tubing diameters of 40-60mm (1.57-2.36 inch) using the single ring buckle button type. The clamps come in a sleek black color, making them a perfect accompaniment to your stage setup. In addition to their practicality, they also come with high-quality packaging and a warranty for added peace of mind. Whether you're a professional performer or just starting out, these clamps are a reliable and durable choice for supporting your stage lighting and effects.