Connects to top of mic stands for holding 2 microphones or boom arms. 3/8" locking screws, adjustable from 60 to 172 mm. Length: 200 mm Material: Aluminum Number of knurled screws: 2 Spacing of holes: From 60 to 172 mm Special features: No parts to lose; connects to top of mic stands with 3/8" thread Threaded connector: 3/8" Weight: 0.06 kg