Item Floor Mount Vibration Isolator Isolator Type Spring Capacity Range 460 to 625 lb Deflection 0.75 in to 1.00 in Height 4 1/2 in Width 2 1/8 in Spring Color White Bolt Size 3/8 x 4 in Dimension A 4 in Dimension T 1/2 in Dimension SW 5/16 in Dimension HCL 4 3/4 in Dimension HCW 1 in Dimension MBD 1/4 in Dimension SBC 5 in Dimension H 4 1/2 in