Comparison : Item # 1AMHD-1006, 1-1/4 Inch (in) Base Diameter (B) Imperial Heavy Duty Anti-Vibration Tapped Control Mount
Item # 1AMHD-1007, 1-7/8 Inch (in) Base Diameter (B) Imperial Heavy Duty Anti-Vibration Tapped Control Mount
Item # 1AMHD-1008, 2-1/2 Inch (in) Base Diameter (B) Imperial Heavy Duty Anti-Vibration Tapped Control Mount
Item # 1AMHD-1009, 3 Inch (in) Base Diameter (B) Imperial Heavy Duty Anti-Vibration Tapped Control Mount
Item # 1AMHD-1010, 4 Inch (in) Base Diameter (B) Imperial Heavy Duty Anti-Vibration Tapped Control Mount