Magnetic-Base Indicator Holder, Arm Type Flexible, Base Height 2 13/64 in, Base Length 2 23/64 in, Base Size 2.362 in L x 1.969 in W x 2 1/5 in H, Base Type Magnetic, Base Width 1 31/32 in, Compatible Indicator Mounts 3/8 in, Holding Power 176 lbf, Maximum Reach 12.992 in, Step Type V Step, Working Length of Post/Lower Arm 12.992 in, Base Thread Size M8 x 1.25, Construction Steel, Includes Not Applicable, Includes Snug Yes, Magnet Type On/Off Knob, Screw Type Plastic Knob