Pro Ball Head for Camera Tripod Slider Rail with Arca-Swiss Type PU60 Quick Release Plate - Ballhead for Tripod 360 Degree Panning Swivel 1/4" 3/8" - for DSLR Canon 5D mark II III 550d 50d 600d 1000d 1100d 650d 700d T5i T4i T3i T2i T1i Nikon D7100 D7000 D5200 D5100 D3200 D3100 D3000 Professional ball head for camera tripod or slider. Made from black anodized aluminum and has two head locking knobs and one pan locking knob. Specification: Ball diameter: 36mm. Width including knobs 100mm. Height 100mm. Base diameter: 55mm. Net weight: 420g. Max load: 15Kg. Panning Range 360 with panning scale. Arca-Swiss Style PU-60 Slide-In Quick Release Plate. universal interchangeable industry standard QR system. Plate dimensions 1.45 x 2.36" (37 x 60 mm) Independent 360-degree pan control knob makes full or partial horizontal panoramic adjustments easy. two bubble levels. Come with extra 1/4"-20 to 3/8"-16 screw for flexibility.