The four ends of the curtain hooks are smooth and free of burrs, so they won't scratch your fingers or damage your curtains. Easy to use and disassemble. Made of high-quality stainless steel, these hooks boast high hardness and strong load-bearing capacity, reducing the number of hooks and curtain rings needed, saving you installation time and extra money. These heavy-duty curtain hooks are suitable for curtains with a head rail, curtain tracks that use gliders with loops, and curtain rod rings that have loops. Depending on the weight of the curtain and personal preferences for pleat size, they offer a variety of installation methods and can be reused, making them especially suitable for DIY projects. Package includes 30 hooks. Various Installation Methods: Method 1 (small pleats): insert one pin of the hook into each row of 4 holes in the curtain rail to create a stiff pencil pleat. Hang the hooks on a curtain rod ring. Curtain pleats are small, suitable for use in small spaces, such as bedrooms. Method 2 (medium pleats): in each row of 8 holes in the curtain rail, insert one pin into every other hole, and one hook is complete. Insert the second hook again after 4-5 holes, using the same method as above. Curtain pleats are medium-sized. Method 3 (large pleats): insert the four pins of the hook into the holes in the tape 1389 (four holes between the third pin and the second pin), and one hook is complete. After 4-8 holes, insert the second hook again, using the same method as above. Curtain pleats are large, with a butterfly-shaped appearance, creating a modern and beautiful style suitable for use in large spaces, such as living rooms. The installation method for hooks depends on the weight and width of the curtain and your personal preferences. If you like small pleats, you can use method 1. If you like large pleats, you can use method 3. You can also DIY according to your own ideas. Note: When installing the curtains, keep them away from children. • 30 Stainless Steel Curtain Hooks, Pinch Pleat, Heavy Duty, Metal Curtain Size: 70 * 25 mm Thickness 2.2 mm