1CNC technology, anodic oxidation treatment, metal material, sturdy and durable, fine workman, firm connection. 2There are fixing bolts at the eyepiece interface to prevent falling off and scratches. 3One end of the adapter is a SLR camera mount, and the other end is a 1.25in telescope interface. 4Suitable for all 1.25in telescope eyepieces, specially designed for digital SLR lenses, turning the camera lens into a telescope. 5Manual focus, adjust according to your needs, and the product is highly durable and sturdy. Item Type: Macro Lens Adapter for CanonEF/EF-S Material: Aluminum Alloy Color: Black Main Interface: for Canon EF/EF-S Mount Secondary Interface: 1.25in T Mount T Mount Screw Thread: M42x0.75 Adjustable Range: 14mm/0.6in Weight: Approx. 134g/4.7oz 1 xMacro Lens Adapter for CanonEF/EF-S 2 x Screw 1: Do not approach the fire source to avoid damage to the surface2: Do not twist too hard or drop the product to avoid deformation of it