6 units, 3 + 3
Closed Back
Nickel
Button Style: Contemporary
Mounting hole diameter: 9.75 mm
Post diameter: 6.00 mm
Mounting method: Offset screw
Ratio: E - 12:1, B - 20:1, G - 35:1, D - 20:1, A - 24:1, E - 39:1