1. ESSENTIAL ACCESSORIES: These four prong curtain hooks are made of stainless steel, it has the features of rust, corrosion, wear resistance and not easy to deform. 2.RANGE USAGE: can be applied to rail type curtains (with loops) and rod type curtains (with loops), curtain rail glides are applied to hang your curtain on the curtain rail using of curtain hooks. 3.EASY TO ASSEMBLE: Smooth without burrs, It will be better than plastic hooks, Can be used with heavier fabrics, large curtains without pressure or folding problem.Perfect to fit curtains of any thickness. 4. ECONOMICAL AND CONVENIENT: Each pack includes 24 packs of deep hooks which can fit any style. Some spare parts can be kept for a quick replacement of old hooks. 5.METAL CURTAIN HOOK SIZE: about 6.8cm * 2.1cm