Double splite collars (SC2) allow installation without disassembling machinerySC2 collars provide superior grip actionFinish: Black Oxide Inside Diameter: 1-1/2 Inch Inside Diameter Maximum: 1.5060 Inch Inside Diameter Minimum: 1.5010 Inch Item: Shaft Collar Material: Low Carbon Steel Measurement: Inch Origin: Imported Outside Diameter: 2-3/8 Inch Outside Diameter Maximum: 2.3830 Inch Outside Diameter Minimum: 2.3670 Inch Set Screw Size: 1/4-28 Style: 2-Piece Thickness: 9/16 Inch Thickness Maximum: 0.5675 Inch Thickness Minimum: 0.5575 Inch Type: Round Bore