1. Suitable for finderscope, , pointer and guidscope; 2. Full aluminium alloy made for use; 3. Universal size 1/4inch fit for different astronomical telescopes; 4. Fixed tightly with metal locking screws. Item: Small Universal Dovetail Groove Thread: 1/4inch screw hole Fit for: Astronomical Telescope Finderscope/Guidescope/ Use: Astonomical Telescopes Colour:black Material:Aluminum alloy Size:Groove Width: 34mm Package Contents: 1 x Dovetail Groove Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. 1. Suitable for finderscope, , pointer and guidscope; 2. Full aluminium alloy made for use; 3. Universal size 1/4inch fit for different astronomical telescopes; 4. Fixed tightly with metal locking screws. 1. Suitable for finderscope, , pointer and guidscope; 2. Full aluminium alloy made for use; 3. Universal size 1/4inch fit for different astronomical telescopes; Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.