[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: A 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.