Climax Metals 2C-062-ZX10 Two-Piece Clamping Collar, Zinc Plating, Steel, 5/8" Bore, 1-5/16" OD, 7/16" Width (Pack of 10) Two-piece clamping shaft collar for applications requiring a stronger holding power and higher axial load capacity than setscrew or one-piece clamping collars Effective on both hard and soft shafts Steel for weldability and rust resistance with zinc plating for better resistance to corrosion than black oxide steel Includes socket-head cap screws for securing the collar onto the shaft Operating temperatures range from -17 to 121 degrees C (0 to 250 degrees F)