Arm Only Arm Type Articulating Base Height 7.4 mm Base Size 7.4 mm H Base Type Non-Magnetic Compatible Indicator Mounts 6 mm Fine Adjustment Position Fine Adjust Top (FAT) Holding Power 0 lbf Maximum Reach 178 mm Working Length of Post/Lower Arm 56 mm Working Length of Snug/Third Arm 71 mm Working Length of Upper Arm 51 mm Base Thread Size M5 Construction Steel Includes M5/M6 Adaptor Includes Snug Yes Screw Type Plastic Knob