SUNNYCLIP ONLY MAKES THE BEST QUALITY ?Size?Letter size ?Material?Aluminum ?Color?Silver From SUNNYCLIP, Leading plate clamp factory technology. Years of factory technology, giving each customer the best experience. Incredible Durability We use high quality recycled aluminum to form a heavy industry. The clip has been tested 2000 times without any quality problems. Superb technology Each product cornering technology will not cause any scratches to user. You can use it with confidence after purchase. Service At SUNNYCLIP, we believe in our products. That's why we take all of them with 18-month after sales service.