Ruland SPC-6-6-SS Two-Piece Clamping Rigid Coupling with Keyway, Stainless Steel, 3/8" Bore A Diameter, 3/8" Bore B Diameter, 7/8" OD, 1-3/8" Length, 3/32" x 3/32" Keyway Width

.Precision honed bores for superior fit and torque transmission. Does not mar the shaft. Keyways are used for additional torque transmission capabilities and to prevent slippage on the shaft.
.Two-piece styles have opposing hardware for a balanced design.
.Proprietary Nypatch anti-vibration hardware prevents galling, maintains high holding power, and allows for multiple screw insertions. Nypatch significantly reduces installation time as no additional screw treatment is needed prior to use.
.Made from 303 stainless steel with hardware of like material for high corrosion resistance. Machined to a fine burr free finish.
.Hardware exceeds ANSI standards for maximum torque capabilities. Ruland rigid couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant.