Product Overview: This is a set of the Nikon Auto Extension Ring PK-13 and Model E2. It is ideal for macro photography, allowing you to take more detailed images by shortening the distance to the subject. Included Accessories: Each extension ring comes with its own dedicated box. Convenient for storage and carrying. Material and Design: Made of sturdy metal construction, it can withstand long-term use. The simple black design matches any camera. - Brand: Nikon - Model: PK-13 - Model: E2 - Accessories: Box - Color: Black - Material: Metal - Type: Auto Extension Ring Thank you.