Features:Protect the lens from accidental damage, blocks stray light from entering the lens, increase the accuracy of photography.Fine workmanship and exquisite appearance, reversible for easy storage.Made of quality plastic material, durable and practical to use.Bayonet mount design, reversible, easy to operate and convenient to use.Suitable for EF 50mm f/1.8 for STM 49mm lens. Specifications:Model: ES-68II Lens HoodLens Hood Diameter: 49mmColour: BlackTexture: High-quality PlasticInstallation Method: BayonetWhether to Support Reverse Deduction: SupportScope of Application: for EF 50mm f/1.8 for STM 49mm Lens Note:Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1 Piece ES-68II Lens Hood