2-Be-Best Projector Mount 1.UNIVERSAL MOUNTING: for almost all projectors with 3 sizes of screw diameters, 0.153/0.232/0.25in (3.9/5.9/6.35mm). Premium Quality Thickened Aluminium Alloy. 2.ROTATABLE: 360° rotation and 180° angles adjustment pivot ball head. Just swivel your projector and fix the black knob to meet a myriad of needs. 3.EXTENDABLE LENGTH-Projector mount in stainless silver coating with extension pole inside has an extending length from 14.5-23.5in / 37-60cm. 4.BETTER VIEWING: Mounts the projector on a ceiling or wall to give you a nice view. If you want cost-effective 2 pack one, pls search and get this one, B07VBPCC6K 5.GREAT FOR PROJECTION-Designed for wall, ceiling and floor with Anti-shake Design and Thickened & Larger Base with a loading capacity about 11 lbs /5kg. Eligible for almost all projectors, mini projectors, cameras. As projector stand too. 3 in 1 6.COST-EFFECTIVE: Many accessories included, like screws, screw adapters and fillings to save extra cost for fittings. 7.HIGHLY COMPATIBLE for QKK, DR.J, DBPOWER, Artlii, LoongSon, APEMAN and other projectors with one single mounting screw..1-Year-Warranty. Pls feel free to tell us any problem. 5.24 hrs nice & professional customer service.Specifications: Material: Aluminium Alloy Length:14.5 to 24 inch / 37 to 60cm(extendable length) Rotation:360 degrees Safety load: 11 lbs /5kg Base Diameter: 4 inch /100mmPackage: 1 x Projector Mount 1 x Manual 4 x Screws and Fillings 2 x Screw adapters