Usage Tips:Features 1、Made of material, which is anti-rust, wear-resistant and durable 2、The inner structure has light eliminating thread, can reduce light reflection to improve clearness of view 3、Precision machining thread of lens adapter and tube, fits perfectly on your camera lens and telescope 4、The lens adapter only supports manual focus and aperture adjustment 5、Easy to use and portable, convenient to carry and store Specification Features: Made of material, which is anti-rust, wear-resistant and durable. The inner structure has light eliminating thread, can reduce light reflection to improve clearness of view. Precision machining thread of lens adapter and tube, fits perfectly on your camera lens and telescope. The lens adapter only supports manual focus and aperture adjustment. Easy to use and portable, convenient to carry and store. Specifications: Material: Aluminum Alloy Color: Black Fitment: for 1.25 inch telescope Mount: 1.25inch T-type Thread: M42 * 0.75mm (for Nikon F mount camera) Tube Size: Approx. 6.8 x 4.4cm / 2.68 x 1.73inch Weight: Approx. 168g Package Included: 1 x Telescope Extension Tube 1 x Lens Adapter for Nikon F mount camera Camera is not included. Note: Please note that the type and old type of this product will be sent randomly, and make sure you will not mind before ordering.