Description: This anodized, machined aluminum tube provides extra focuser back travel, which is sometimes needed to achieve focus with certain eyepiece/telescope combinations. More back travel is often needed for short-range terrestrial viewing through a telescope, or with use of a field flattener, coma corrector, or focal reducer lens. Adds 2 inches of length extension. This 2" extension tube features one locking thumbscrews and is threaded for use with 2" filters. Specifications: 1.Brand: SVBONY2.Model: SV1583.Material: Aluminum Alloy4.Color: Black5.Specification: 2" Extension Tube L=75mm 6.Dimensions (mm):?59*75 mm7.Weight (g): 108g Package Includes: 1 x SVBONY SV158 2 " Extension Tube Details Pictures:
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