Concentric Journal, Adjustibliity Concentric, Journal Length 0.785 in, Journal Mount Thread 1/4-28, Journal Mounting Diameter 0.25 in, Maximum Mounting Plate Thickness 0.375 in, Minimum Mounting Plate Thickness 0.125 in, Overall Length 1.54 in, Series DualVee, Size 1, System of Measurement Inch, Wheel Mounting Diameter 0.187 in, Wheel Mount Thread 10-32, Maximum Operating Temperature 500 Degrees F, Minimum Operating Temperature -94 Degrees F, Hex Size 0.438 in