SDTC Tech 1/4 inch Flange Shaft Coupling Metal Axis Bearing Fittings Rigid Coupler for Stepper Motor RC Model (2 Pack) Size:1/4 inch durable in use and waterproof

durable in use and waterproof from water-drops and raindrops

operate up to 22000 RPM

（Carmine stain）4

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SDTC Tech 1/4 inch Flange Shaft Coupling Metal Axis Bearing Fittings Rigid Coupler for Stepper Motor RC Model (2 Pack) Size:1/4 inch durable in use and waterproofSDTC Tech 1 4 inch Flange Shaft Coupling Metal Axis Bearing Fittings Rigid Coupler for Stepper Motor RC Model (2 Pack) Specification: Inner Diameter: 1 4 inch (6. 35mm)Cylinder Outer Diameter: 10mmCylinder Height: 10mmBase Diameter: 22mmBase Height: 2mmBase Hole Pitch: 16mmFastening Screw Hole: M3Base Fixing Screw Hole: M3Package Include: 2 x 1 4 inch Flange Shaft Coupling 1 x Hex Wrench 4 x M3 Fastening Screw Product Features Flange Shaft Coupling is