Specification Brand : IOFIT BulletPoint1 : Flange coupling is made of 45# steel, heat and electroplated process make it sturdiness and insulation. BulletPoint2 : Flange coupling rigid flange disc shaft couplings optical axis easy for installment and replacement. BulletPoint3 : A special coupler, which can fix one shaft to a plane and install other parts on the shaft easily. This seat could make your shaft more stable. BulletPoint4 : Type: Flange Shaft Coupling, suitable for model shaft connection, perfect accessories for RC Model motor, etc. BulletPoint5 : Good Workmanship: Exquisite workmanship, beautiful appearance, small size, providing you great using experience. Color : Silver ExternallyAssignedProductIdentifier : 9436192135632 ItemName : 1pcs Rigid Flange Coupling Inner Diameter 3 4 5 6 7 8 10 11 12mm Guide Shaft Optical Axis Support (Size : Inner Hole 3mm) ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : IOFIT Material : Steel MetalType : Alloy Steel NumberOfItems : 1 PartNumber : IOFIT ProductDescription : Please check which Size and the Quantity you need . Material: steel MOQ: 1pcs / lot ProductSiteLaunchDate : 2023-09-27T03:31:15.841Z Size : Inner hole 3mm