Check the listing for details. Gravity Stands GMSTM1B | Microphone Table Clamp. Condition: New. Listed at 19.99 USD. The Gravity MSTM 1 B microphone table clamp firmly attaches to desk or podium tops with a maximum thickness of 45 mm. It is made of 4 mm steel with a plastic tipped set screw and 3/8" threaded bolt for mic clip, mic clamp or gooseneck mounting. Features: Microphone holder for table tops, podiums etc. 3/8" threaded bolt. Plastic tipped set screw. Black powder coating finish. For up to 45 mm table top thickness. Specifications: Product type Microphone Accessories Type Microphone Holder Color Black Material Steel Surface Powder coated Threaded connector 3/8" For table top thickness up to 1.7" (45 mm) Weight 0.4 lbs / 0.185 kg