Standart Traditional adjustable mic arm with external suspension springs which have been dampened to prevent noise when adjusted in live conditions. Mic arm can be locked using the knurled scew positioned at the folding point of the arm. Supplied with a__3/8___ male threaded spigot. For tidiness, the mic cable (up to 5.5mm diameter, e.g.__HST-M) can be threaded within the mic arm structure. Heavy Duty Modern adjustable mic arm with internal spring mechanism which eliminates the possibility of noise when adjusting in live conditions. Mic arm is locked using the locking knob positioned at the folding point of the arm. Supplied with a__3/8___ male threaded spigot. For tidiness, the mic cable (up to 6.5mm diameter, e.g. HST) can be threaded within the mic arm structure. Internally wired arms Both arms are available internally wired, using__HST-R-M__heavy duty polyurethane jacketed cable. The microphone end is terminated to an XLR 3 pin female via a 400mm tail, and the table end terminated to an XLR 3 pin male via a 300mm tail. The cable can be slid within the arm to alter the tail length at each end.