[Compatibility]: This guide slot handle is designed to be easily installed on astronomical telescope clamps, photography rings, and plates with 1/4 or M6 screw holes [Sturdy Material] Astronomical Telescope Handle is made of Aluminum Alloy, sturdy structure [60 Degree Slot]: The 60 degree slot allows seamless connection with guiding scope, finderscopes, and astronomy boxes [Reliable]: This handle ensures that your accessories remain firmly attached without the risk of falling off due to loose fittings [Easy to Install]: Telescope guide slot handle along with four screws for easy installation Size: 15.5cm x 4.4cm x 3.7cm / 6.10inch x 1.73inch x 1.46inch Color: Black Material: Aluminum Alloy Package Contents: 1 * Astronomical Telescope Handle Bar 4 * Screws Only the above package content, other products are not included Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowance is +/- 1-3cm