With one M10 threaded hole and one M8 threaded hole. The thread on the screw allows smooth sliding without getting stuck. Heavy duty C-clip: Made of high-quality stainless steel with a surface coating for corrosion resistance, rust resistance, and durability. The I-beam design provides strength and ensures a secure grip without deformation. Wide application range: This C-type clamp is suitable for assembly, fastening, bonding, and welding. Commonly used in furniture manufacturing, metalworking, home, and automotive applications, this reliable metal C-clip helps hold items securely in place. Convenient to use: Features adjustable set screws that can be customized as needed. Easily attaches to table tops and wooden boards, providing strong clamping force and ease of use. Size: 120mm / 100mm / 85mm / 65mm. Material: Stainless steel. Color: Silver. Package Contents: 2 x C clamps. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.