TECHNICS EPA-100 mk2 tonearm 

Specifications:

Type - Variable braking dynamic damping system Universal tone arm
Effective bearing spacing - 30 mm both horizontally and vertically
Arm pipe - Boron Titanium Pipe
Effective arm length - 250mm
Total arm length range -  322 mm ~ 350 mm
Arm rear length range -  66.5 mm ~ 94.5 mm
Arm Height Adjustment Range - 44 mm ~ 64 mm (Helicoid Part 20 mm)
Overhang - 15mm
Horizontal tracking error angle - + 1 ° 6' (30 cm record inner circumference) + 2 ° 6' (30 cm record circumference)
Rotational axis sensitivity - Horizontal / vertical, initial motion sensitivity 5 mg
Arm effective mass - 22g (Cartridge Weight 6.5g, Needle Pressure 1.25g)
Arm resonance frequency - 9.8Hz (Compliance : 12x10-6cm/dyne Cartridge self-weight 6.5g, needle pressure 1.25g)
Arm resonance sharpness - (Q) 6 dB or Less (Optimal Adjustment)
Needle pressure adjustment range - 0 ~ 3g
Shell Weight - 9.5g (Boron Aluminum)
Cartridge Mounting Dimensions - JIS Standard 12.7 mm (1/2 inch) Mounting Interval
Shell terminal lug Lug - for 1.2 mm D, 4-pin terminal
Applicable Cartridge Weight - 5g ~ 10g
Arm mounting hole diameter - 62 mm D