Plastic ring binder/PP ring binder 1.reasonable price with high quality 2.color: assorted 3.size:many sizes are available 4.material: plastic 5.packing: 500pcs/carton Different specifications are available according to customers' requirements. Features: 1. Material: plastic 2. Round shape: 6mm to 25mm 3. Oval shape: 28mm to 51mm 4. Colors: wide choice of colors, black, white, pink, blue, green,red,etc. 5. Place of origin: China 6. OEM service is available