Package: 1x Double ball head mount, 1x Super clamp Features: Cool-Ball head is a Multi-Function Double Ball Head with bottom clamp and 1/4" screw. Cool-Ball head can Mount Monitors and led Lights to DSLR, 360?Articulation. 1/4"-20 Screw on Top. It can be mounted directly to a DSLR or camcorder's shoe mount, and allows for the attachment of a full array of video accessories. Used to attach monitors or small lights to your camera while shooting video, this ball head has a single locking knob for fast and safe operation. Double Ball Head: Color: Black+Red Material: Aluminum alloy and Stainless Steel Max Load: 1.0 kg Size: 20 x 88mm Thread Size: 1/4"-20 Super Clamp: Jaw Opens from 15mm to 55mm The jaw opens to max about 2.1" (55mm), and minimum 15mm. That is to say, you could mount it on anything from 15mm to 55mm, such as 15mm rods, 19mm rods, table, handheld bar, table, bike handlebar, etc. Well Made, Durable and Stable This Super Clamp is made of Aluinum Alloy and Stainless Steel, which is anti-rusty and very durable when using. The surface of the clamp is very smooth. Built-in 1/4"-20 and 3/8"-16 Thread With 1/4"-20 and 3/8"-16 threaded holes on this clamp, you are able to connect and mount a variety of accessories according to your needs, such as magic arm Versatile Tool for You It is a very versatile tool for everything: mounts onto anything like cameras, lights, umbrellas, hooks, shelves, plate glass, cross bars. It's up to your imagination inventive ideas. Better Rubber for You! We use the better rubber for the jaw of the super clamp, which is more durable and thick than others'. It helps you to grab your equipments more firmly and protects your accessories.