NEEWER Heavy Duty C Clamp with Mounting Column for Light Bracket, Adjustable Metal Desk Clamp with 1/4 3/8 Screw for Ring Lighting, Max Load 44 lb/20kg, St-CCD1

NEEWER Heavy Duty C Clamp with Mounting Column for Light Stand, Adjustable Metal Desk Clamp with 1/4" 3/8" Screws for Ring Light LED Video Light Camera, Max Load 44lb/20kg, ST-CCD1

CAMVATE 11 inch Adjustable Articulating Friction Magic Arm Compatible with LCD Monitor, DSLR Camera Rig, LED Lights, Flash Light - 1477

71mm Tripod Collar Mount Ring 1/4" for Sigma APO 70-200mm F2.8 II EX DG Macro HSM Lens