Product Name: Eye Screw Hook; Package Content: 50(+/-2%)pcs x Eye Screw HookMaterial: Iron; Main Color: Silver Blue; Weight: 30gTotal Size: 20 x 10mm / 0.79" x 0.39" (L*W)Thread Length: 6mm / 0.24"; Thread Dia.: 2.2mm / 0.09"; Mounth Width: 5.1mm / 0.2"Finish: Zinc Finish; Strength Grade: 4.8Quick, easy installtion. Long thread screw for extra holding power.Iron constructed with zinc plated for a long time use.While pre-drilling is not required, it is recommended for best result.Perfect for hanging lights, curtains and other items around house