Adjusting Tightener, Arm Length to Hole Center 2 in, For Shaft Thread Size 3/4 In.-10, Includes Tightener Shaft No, Mount Base Length 4 1/2 in, Mount Base Width 5/8 in, Mount Hole Diameter 3/8 in, Overall Length 2.06 in, Shaft Diameter Not Applicable, Shaft Length Not Applicable, Shaft Thread Size 3/4 In.-10, Thread Length 7/8 in, Adjustment Type Adjustable Base