●Material: stainless steel material, strong and durable. ●Practical design: D-type design, beautiful appearance, easy to carry and use. ●Wide range of applications: 1/4" screw suitable for most photographic equipment, DSLR cameras, telescopes etc. ●Easy to use: simply turn it and it slides directly into its place. The screw is equipped with rubber pads to protect your camera and prevent it from loosening. ●Package Includes:3pcs D Ring Screw