With one M10 threaded hole and one M8 threaded hole. The thread on the screw allows it to slide smoothly without getting stuck. Heavy duty C-clip: The C-clip is made of high-quality stainless steel with a coating on the surface, which is corrosion resistant, rust resistant, and sturdy. The I-beam design provides a certain degree of strength, ensuring that the object is firmly grasped without deformation. Wide application range: The C-type fixture has powerful functions and a wide range of applications, and can fix parts for assembly, fastening, bonding, and welding. Widely used in furniture manufacturing, metal processing, as well as home and automotive applications, this reliable metal C-clip ensures that everything is in the correct position. Convenient to use: The clamp has adjustable set screws, which can be adjusted as needed. It can be easily clamped on any table top and wooden plank, with strong clamping force and convenient use. Size: 120mm / 100mm / 85mm / 65mm Material: Stainless steel Color: Silver Package Contents: 2 x C clamps Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.