Efficient Curtain Grommets Set ----- This curtain grommets set includes 20pcs silver curtain grommets + 20pcs clear plastic connectors. Total 40 pieces meets your various DIY curtain installation needs. Wide Application ----- The curtain rings are suitable for window curtain rods, shower curtain rods, locker room curtain rods and more. Help you your curtains keep nice and straight, preventing snags and creases. High-Quality Material ----- These curtain grommets are made of high-quality ABS plastic material, sturdy, lightweight, abrasion-resistant, rust-resistant and durable for long-lasting use, while maintaining their colors over time. The large ring design makes it difficult for them to loosen, ensuring your curtains stay securely in place. The Standard Size ----- The curtain grommets measures approximately 1.64 inches / 42mm in inner diameter and 2.74 inches / 70mm in outer diameter. The plastic connectors measures approximately 2.74 inches / 70mm in length. Fit onto curtain rod up to 1-5/8 inch diameter. Easy Curtain Grommets Installation ----- 1. Open the curtain grommet and put the plastic connector on the ring; 2. Snap the two parts of curtain grommet together through the curtain hole; 3. Link two plastic connectors together. This process is easy to implement and do not require any tools to achieve exquisite result.