PSA1 Professional Studio Arm Features: Professional studio arm Ideal for radio, broadcast, studio, and home use Internal springs for quiet operation Includes both threaded desk insert and desk mount clamp Supported microphone and shockmount/clip weight between 700g to 1.1kg Specifications: Thread Size 3/8" Weight (g) 1740 Horizontal Reach (mm) 820 Vertical Reach (mm) 840 Minimum Weight Supported (g) 700 Maximum Weight Supported (g) 1100