Climax Metals Part 2C-100, Mild Steel, Black Oxide Plating, Clamping Collar, 1 inch bore, 1 3/4 inch OD, 1/2 inch Width, 1/4-28 x 5/8" Clamp Screw
Two-Piece Clamping Collars are designed to handle applications that require greater axial load capacity than Set Screw Collars and One-Piece Clamping Collars without marring the shaft.  Easily installed where major disassembly would otherwise be required. Effective on hard and soft shafts. Made from Steel with a Black Oxide finish.