T2 Extension Tube M42x0.75 Thread Professional for Astronomical Telescope 3 mm

Description: Fully metal construction and anodizing aluminum process, durable for long time use.Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners.The extension tube has a T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems.Please Note: This is M42 (42mm) thread caliber, not M48 thread caliber.Please make sure this is the correct size and thread before purchasing; If you have any problems about your purchase, please don\'t hesitate to contact us and we\'ll make it right. Specification: Type: Astronomical T2 Thread Extension TubeMale thread: M42*0.75mmFemale thread: M42*0.75mmLength: 3mm 5mm 7mm 10mm 12mm 15mm 20mm 30mm(Optional)Color: Black Size Chart: 42mm/1.65inch3mm/0.12inch5mm/0.20inch7mm/0.28inch10mm/0.39inch12mm/0.47inch15mm/0.59inch20mm/0.79inch30mm/1.18inch Package Includes: 1*Extension Tube Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping! Giá sản phẩm trên Tiki đã bao gồm thuế theo luật hiện hành. Bên cạnh đó, tuỳ vào loại sản phẩm, hình thức và địa chỉ giao hàng mà có thể phát sinh thêm chi phí khác như phí vận chuyển, phụ phí hàng cồng kềnh, thuế nhập khẩu (đối với đơn hàng giao từ nước ngoài có giá trị trên 1 triệu đồng).....